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Finding the Fourth Proportional to 151,248.72, 208,700.11 and 87,574.22

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Solution

The fourth proportional to 151,248.72, 208,700.11 and 87,574.22 is: 120,839.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,248.72 : 208,700.11 = 87,574.22 : x
  2. Step 2: Convert to fraction form
    151,248.72/208,700.11 = 87,574.22/x
  3. Step 3: Cross multiply
    151,248.72x = 208,700.11 × 87,574.22
  4. Step 4: Simplify right side
    151,248.72x = 18,276,749,195.76
  5. Step 5: Solve for x
    x = 18,276,749,195.76/151,248.72
  6. Step 6: Final answer
    x = 120,839.03

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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.