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Finding the Fourth Proportional to 124,912.60, 187,239.30 and 68,666.20

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Solution

The fourth proportional to 124,912.60, 187,239.30 and 68,666.20 is: 102,928.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,912.60 : 187,239.30 = 68,666.20 : x
  2. Step 2: Convert to fraction form
    124,912.60/187,239.30 = 68,666.20/x
  3. Step 3: Cross multiply
    124,912.60x = 187,239.30 × 68,666.20
  4. Step 4: Simplify right side
    124,912.60x = 12,857,011,221.66
  5. Step 5: Solve for x
    x = 12,857,011,221.66/124,912.60
  6. Step 6: Final answer
    x = 102,928.06

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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.