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Finding the Fourth Proportional to 178,818.69, 268,301.49 and 85,264.77

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Solution

The fourth proportional to 178,818.69, 268,301.49 and 85,264.77 is: 127,932.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,818.69 : 268,301.49 = 85,264.77 : x
  2. Step 2: Convert to fraction form
    178,818.69/268,301.49 = 85,264.77/x
  3. Step 3: Cross multiply
    178,818.69x = 268,301.49 × 85,264.77
  4. Step 4: Simplify right side
    178,818.69x = 22,876,664,835.51
  5. Step 5: Solve for x
    x = 22,876,664,835.51/178,818.69
  6. Step 6: Final answer
    x = 127,932.18

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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.