Home / 103,429.28-142,747.84-63,166.20

Finding the Fourth Proportional to 103,429.28, 142,747.84 and 63,166.20

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Solution

The fourth proportional to 103,429.28, 142,747.84 and 63,166.20 is: 87,178.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,429.28 : 142,747.84 = 63,166.20 : x
  2. Step 2: Convert to fraction form
    103,429.28/142,747.84 = 63,166.20/x
  3. Step 3: Cross multiply
    103,429.28x = 142,747.84 × 63,166.20
  4. Step 4: Simplify right side
    103,429.28x = 9,016,838,611.01
  5. Step 5: Solve for x
    x = 9,016,838,611.01/103,429.28
  6. Step 6: Final answer
    x = 87,178.78

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1.5x scale

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.