Home / 103,142.28-142,336.18-62,856.20

Finding the Fourth Proportional to 103,142.28, 142,336.18 and 62,856.20

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Solution

The fourth proportional to 103,142.28, 142,336.18 and 62,856.20 is: 86,741.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,142.28 : 142,336.18 = 62,856.20 : x
  2. Step 2: Convert to fraction form
    103,142.28/142,336.18 = 62,856.20/x
  3. Step 3: Cross multiply
    103,142.28x = 142,336.18 × 62,856.20
  4. Step 4: Simplify right side
    103,142.28x = 8,946,711,397.32
  5. Step 5: Solve for x
    x = 8,946,711,397.32/103,142.28
  6. Step 6: Final answer
    x = 86,741.45

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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.