Home / 99,649.88-137,432.24-84,203.18

Finding the Fourth Proportional to 99,649.88, 137,432.24 and 84,203.18

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Solution

The fourth proportional to 99,649.88, 137,432.24 and 84,203.18 is: 116,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,649.88 : 137,432.24 = 84,203.18 : x
  2. Step 2: Convert to fraction form
    99,649.88/137,432.24 = 84,203.18/x
  3. Step 3: Cross multiply
    99,649.88x = 137,432.24 × 84,203.18
  4. Step 4: Simplify right side
    99,649.88x = 11,572,231,880.85
  5. Step 5: Solve for x
    x = 11,572,231,880.85/99,649.88
  6. Step 6: Final answer
    x = 116,128.90

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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.