Home / 156,385.05-215,834.42-99,029.61

Finding the Fourth Proportional to 156,385.05, 215,834.42 and 99,029.61

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Solution

The fourth proportional to 156,385.05, 215,834.42 and 99,029.61 is: 136,675.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,385.05 : 215,834.42 = 99,029.61 : x
  2. Step 2: Convert to fraction form
    156,385.05/215,834.42 = 99,029.61/x
  3. Step 3: Cross multiply
    156,385.05x = 215,834.42 × 99,029.61
  4. Step 4: Simplify right side
    156,385.05x = 21,373,998,437.18
  5. Step 5: Solve for x
    x = 21,373,998,437.18/156,385.05
  6. Step 6: Final answer
    x = 136,675.46

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.