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Finding the Fourth Proportional to 124,893.60, 187,340.40 and 75,127.20

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Solution

The fourth proportional to 124,893.60, 187,340.40 and 75,127.20 is: 112,690.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,893.60 : 187,340.40 = 75,127.20 : x
  2. Step 2: Convert to fraction form
    124,893.60/187,340.40 = 75,127.20/x
  3. Step 3: Cross multiply
    124,893.60x = 187,340.40 × 75,127.20
  4. Step 4: Simplify right side
    124,893.60x = 14,074,359,698.88
  5. Step 5: Solve for x
    x = 14,074,359,698.88/124,893.60
  6. Step 6: Final answer
    x = 112,690.80

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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.