Home / 99,103.20-136,762.78-53,781.17

Finding the Fourth Proportional to 99,103.20, 136,762.78 and 53,781.17

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Solution

The fourth proportional to 99,103.20, 136,762.78 and 53,781.17 is: 74,218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,103.20 : 136,762.78 = 53,781.17 : x
  2. Step 2: Convert to fraction form
    99,103.20/136,762.78 = 53,781.17/x
  3. Step 3: Cross multiply
    99,103.20x = 136,762.78 × 53,781.17
  4. Step 4: Simplify right side
    99,103.20x = 7,355,262,320.85
  5. Step 5: Solve for x
    x = 7,355,262,320.85/99,103.20
  6. Step 6: Final answer
    x = 74,218.21

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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.