Home / 210,833,012.16-290,947,528.80-121,492,132.74

Finding the Fourth Proportional to 210,833,012.16, 290,947,528.80 and 121,492,132.74

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Solution

The fourth proportional to 210,833,012.16, 290,947,528.80 and 121,492,132.74 is: 167,657,974.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,833,012.16 : 290,947,528.80 = 121,492,132.74 : x
  2. Step 2: Convert to fraction form
    210,833,012.16/290,947,528.80 = 121,492,132.74/x
  3. Step 3: Cross multiply
    210,833,012.16x = 290,947,528.80 × 121,492,132.74
  4. Step 4: Simplify right side
    210,833,012.16x = 35,347,835,789,344,572
  5. Step 5: Solve for x
    x = 35,347,835,789,344,572/210,833,012.16
  6. Step 6: Final answer
    x = 167,657,974.56

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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.