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Finding the Fourth Proportional to 103,432.80, 155,158.08 and 28,552.92

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Solution

The fourth proportional to 103,432.80, 155,158.08 and 28,552.92 is: 42,831.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,432.80 : 155,158.08 = 28,552.92 : x
  2. Step 2: Convert to fraction form
    103,432.80/155,158.08 = 28,552.92/x
  3. Step 3: Cross multiply
    103,432.80x = 155,158.08 × 28,552.92
  4. Step 4: Simplify right side
    103,432.80x = 4,430,216,245.59
  5. Step 5: Solve for x
    x = 4,430,216,245.59/103,432.80
  6. Step 6: Final answer
    x = 42,831.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.