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Finding the Fourth Proportional to 102,377.70, 153,566.55 and 91,491.30

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Solution

The fourth proportional to 102,377.70, 153,566.55 and 91,491.30 is: 137,236.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,377.70 : 153,566.55 = 91,491.30 : x
  2. Step 2: Convert to fraction form
    102,377.70/153,566.55 = 91,491.30/x
  3. Step 3: Cross multiply
    102,377.70x = 153,566.55 × 91,491.30
  4. Step 4: Simplify right side
    102,377.70x = 14,050,003,296.02
  5. Step 5: Solve for x
    x = 14,050,003,296.02/102,377.70
  6. Step 6: Final answer
    x = 137,236.95

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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.