Home / 129,155.80-193,733.70-99,631.30

Finding the Fourth Proportional to 129,155.80, 193,733.70 and 99,631.30

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Solution

The fourth proportional to 129,155.80, 193,733.70 and 99,631.30 is: 149,446.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,155.80 : 193,733.70 = 99,631.30 : x
  2. Step 2: Convert to fraction form
    129,155.80/193,733.70 = 99,631.30/x
  3. Step 3: Cross multiply
    129,155.80x = 193,733.70 × 99,631.30
  4. Step 4: Simplify right side
    129,155.80x = 19,301,940,384.81
  5. Step 5: Solve for x
    x = 19,301,940,384.81/129,155.80
  6. Step 6: Final answer
    x = 149,446.95

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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.