Home / 103,139.40-142,321.68-60,695.40

Finding the Fourth Proportional to 103,139.40, 142,321.68 and 60,695.40

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Solution

The fourth proportional to 103,139.40, 142,321.68 and 60,695.40 is: 83,753.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,139.40 : 142,321.68 = 60,695.40 : x
  2. Step 2: Convert to fraction form
    103,139.40/142,321.68 = 60,695.40/x
  3. Step 3: Cross multiply
    103,139.40x = 142,321.68 × 60,695.40
  4. Step 4: Simplify right side
    103,139.40x = 8,638,271,296.27
  5. Step 5: Solve for x
    x = 8,638,271,296.27/103,139.40
  6. Step 6: Final answer
    x = 83,753.36

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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.