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Finding the Fourth Proportional to 148,695, 205,215.29 and 88,280.47

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Solution

The fourth proportional to 148,695, 205,215.29 and 88,280.47 is: 121,836.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,695 : 205,215.29 = 88,280.47 : x
  2. Step 2: Convert to fraction form
    148,695/205,215.29 = 88,280.47/x
  3. Step 3: Cross multiply
    148,695x = 205,215.29 × 88,280.47
  4. Step 4: Simplify right side
    148,695x = 18,116,502,252.39
  5. Step 5: Solve for x
    x = 18,116,502,252.39/148,695
  6. Step 6: Final answer
    x = 121,836.66

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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.