Home / 101,567.18-140,139.51-65,287.58

Finding the Fourth Proportional to 101,567.18, 140,139.51 and 65,287.58

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Solution

The fourth proportional to 101,567.18, 140,139.51 and 65,287.58 is: 90,081.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,567.18 : 140,139.51 = 65,287.58 : x
  2. Step 2: Convert to fraction form
    101,567.18/140,139.51 = 65,287.58/x
  3. Step 3: Cross multiply
    101,567.18x = 140,139.51 × 65,287.58
  4. Step 4: Simplify right side
    101,567.18x = 9,149,369,470.29
  5. Step 5: Solve for x
    x = 9,149,369,470.29/101,567.18
  6. Step 6: Final answer
    x = 90,081.95

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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.