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Finding the Fourth Proportional to 103,711.60, 155,221.80 and 95,417.20

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Solution

The fourth proportional to 103,711.60, 155,221.80 and 95,417.20 is: 142,807.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,711.60 : 155,221.80 = 95,417.20 : x
  2. Step 2: Convert to fraction form
    103,711.60/155,221.80 = 95,417.20/x
  3. Step 3: Cross multiply
    103,711.60x = 155,221.80 × 95,417.20
  4. Step 4: Simplify right side
    103,711.60x = 14,810,829,534.96
  5. Step 5: Solve for x
    x = 14,810,829,534.96/103,711.60
  6. Step 6: Final answer
    x = 142,807.84

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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.