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Finding the Fourth Proportional to 151,227.47, 208,669.50 and 86,684.85

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Solution

The fourth proportional to 151,227.47, 208,669.50 and 86,684.85 is: 119,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,227.47 : 208,669.50 = 86,684.85 : x
  2. Step 2: Convert to fraction form
    151,227.47/208,669.50 = 86,684.85/x
  3. Step 3: Cross multiply
    151,227.47x = 208,669.50 × 86,684.85
  4. Step 4: Simplify right side
    151,227.47x = 18,088,484,307.08
  5. Step 5: Solve for x
    x = 18,088,484,307.08/151,227.47
  6. Step 6: Final answer
    x = 119,611.10

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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.