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Finding the Fourth Proportional to 143,956.80, 215,935.20 and 124,711.20

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Solution

The fourth proportional to 143,956.80, 215,935.20 and 124,711.20 is: 187,066.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,956.80 : 215,935.20 = 124,711.20 : x
  2. Step 2: Convert to fraction form
    143,956.80/215,935.20 = 124,711.20/x
  3. Step 3: Cross multiply
    143,956.80x = 215,935.20 × 124,711.20
  4. Step 4: Simplify right side
    143,956.80x = 26,929,537,914.24
  5. Step 5: Solve for x
    x = 26,929,537,914.24/143,956.80
  6. Step 6: Final answer
    x = 187,066.80

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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.