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Finding the Fourth Proportional to 151,143.40, 226,715.10 and 127,815.40

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Solution

The fourth proportional to 151,143.40, 226,715.10 and 127,815.40 is: 191,723.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,143.40 : 226,715.10 = 127,815.40 : x
  2. Step 2: Convert to fraction form
    151,143.40/226,715.10 = 127,815.40/x
  3. Step 3: Cross multiply
    151,143.40x = 226,715.10 × 127,815.40
  4. Step 4: Simplify right side
    151,143.40x = 28,977,681,192.54
  5. Step 5: Solve for x
    x = 28,977,681,192.54/151,143.40
  6. Step 6: Final answer
    x = 191,723.10

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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.