Home / 99,128.20-136,734.66-58,813.44

Finding the Fourth Proportional to 99,128.20, 136,734.66 and 58,813.44

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Solution

The fourth proportional to 99,128.20, 136,734.66 and 58,813.44 is: 81,125.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,128.20 : 136,734.66 = 58,813.44 : x
  2. Step 2: Convert to fraction form
    99,128.20/136,734.66 = 58,813.44/x
  3. Step 3: Cross multiply
    99,128.20x = 136,734.66 × 58,813.44
  4. Step 4: Simplify right side
    99,128.20x = 8,041,835,721.83
  5. Step 5: Solve for x
    x = 8,041,835,721.83/99,128.20
  6. Step 6: Final answer
    x = 81,125.61

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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.