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Finding the Fourth Proportional to 99,101.31, 148,674.66 and 42,950.85

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Solution

The fourth proportional to 99,101.31, 148,674.66 and 42,950.85 is: 64,436.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,101.31 : 148,674.66 = 42,950.85 : x
  2. Step 2: Convert to fraction form
    99,101.31/148,674.66 = 42,950.85/x
  3. Step 3: Cross multiply
    99,101.31x = 148,674.66 × 42,950.85
  4. Step 4: Simplify right side
    99,101.31x = 6,385,703,020.46
  5. Step 5: Solve for x
    x = 6,385,703,020.46/99,101.31
  6. Step 6: Final answer
    x = 64,436.11

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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.