Home / 261,718,686.34-361,167,101.50-142,642,351.06

Finding the Fourth Proportional to 261,718,686.34, 361,167,101.50 and 142,642,351.06

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Solution

The fourth proportional to 261,718,686.34, 361,167,101.50 and 142,642,351.06 is: 196,843,890.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,718,686.34 : 361,167,101.50 = 142,642,351.06 : x
  2. Step 2: Convert to fraction form
    261,718,686.34/361,167,101.50 = 142,642,351.06/x
  3. Step 3: Cross multiply
    261,718,686.34x = 361,167,101.50 × 142,642,351.06
  4. Step 4: Simplify right side
    261,718,686.34x = 51,517,724,483,485,656
  5. Step 5: Solve for x
    x = 51,517,724,483,485,656/261,718,686.34
  6. Step 6: Final answer
    x = 196,843,890.68

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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.