Home / 103,129.14-142,305.48-62,828.28

Finding the Fourth Proportional to 103,129.14, 142,305.48 and 62,828.28

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Solution

The fourth proportional to 103,129.14, 142,305.48 and 62,828.28 is: 86,695.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,129.14 : 142,305.48 = 62,828.28 : x
  2. Step 2: Convert to fraction form
    103,129.14/142,305.48 = 62,828.28/x
  3. Step 3: Cross multiply
    103,129.14x = 142,305.48 × 62,828.28
  4. Step 4: Simplify right side
    103,129.14x = 8,940,808,542.97
  5. Step 5: Solve for x
    x = 8,940,808,542.97/103,129.14
  6. Step 6: Final answer
    x = 86,695.27

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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.