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Finding the Fourth Proportional to 103,607.71, 154,821.76 and 77,793.75

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Solution

The fourth proportional to 103,607.71, 154,821.76 and 77,793.75 is: 116,247.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,607.71 : 154,821.76 = 77,793.75 : x
  2. Step 2: Convert to fraction form
    103,607.71/154,821.76 = 77,793.75/x
  3. Step 3: Cross multiply
    103,607.71x = 154,821.76 × 77,793.75
  4. Step 4: Simplify right side
    103,607.71x = 12,044,165,097.52
  5. Step 5: Solve for x
    x = 12,044,165,097.52/103,607.71
  6. Step 6: Final answer
    x = 116,247.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.