Home / 210,721,198,809.12-290,787,730,420.71-119,267,786,100.53

Finding the Fourth Proportional to 210,721,198,809.12, 290,787,730,420.71 and 119,267,786,100.53

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Solution

The fourth proportional to 210,721,198,809.12, 290,787,730,420.71 and 119,267,786,100.53 is: 164,585,286,285.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,721,198,809.12 : 290,787,730,420.71 = 119,267,786,100.53 : x
  2. Step 2: Convert to fraction form
    210,721,198,809.12/290,787,730,420.71 = 119,267,786,100.53/x
  3. Step 3: Cross multiply
    210,721,198,809.12x = 290,787,730,420.71 × 119,267,786,100.53
  4. Step 4: Simplify right side
    210,721,198,809.12x = 34,681,608,832,475,824,390,144
  5. Step 5: Solve for x
    x = 34,681,608,832,475,824,390,144/210,721,198,809.12
  6. Step 6: Final answer
    x = 164,585,286,285.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.