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Finding the Fourth Proportional to 156,031, 215,326.02 and 92,345.56

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Solution

The fourth proportional to 156,031, 215,326.02 and 92,345.56 is: 127,438.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,031 : 215,326.02 = 92,345.56 : x
  2. Step 2: Convert to fraction form
    156,031/215,326.02 = 92,345.56/x
  3. Step 3: Cross multiply
    156,031x = 215,326.02 × 92,345.56
  4. Step 4: Simplify right side
    156,031x = 19,884,401,899.47
  5. Step 5: Solve for x
    x = 19,884,401,899.47/156,031
  6. Step 6: Final answer
    x = 127,438.79

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.