Home / 99,141.18-148,711.85-81,574.08

Finding the Fourth Proportional to 99,141.18, 148,711.85 and 81,574.08

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Solution

The fourth proportional to 99,141.18, 148,711.85 and 81,574.08 is: 122,361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,141.18 : 148,711.85 = 81,574.08 : x
  2. Step 2: Convert to fraction form
    99,141.18/148,711.85 = 81,574.08/x
  3. Step 3: Cross multiply
    99,141.18x = 148,711.85 × 81,574.08
  4. Step 4: Simplify right side
    99,141.18x = 12,131,032,348.85
  5. Step 5: Solve for x
    x = 12,131,032,348.85/99,141.18
  6. Step 6: Final answer
    x = 122,361.19

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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.