Home / 112,909.85-155,771.13-65,153.97

Finding the Fourth Proportional to 112,909.85, 155,771.13 and 65,153.97

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Solution

The fourth proportional to 112,909.85, 155,771.13 and 65,153.97 is: 89,886.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,909.85 : 155,771.13 = 65,153.97 : x
  2. Step 2: Convert to fraction form
    112,909.85/155,771.13 = 65,153.97/x
  3. Step 3: Cross multiply
    112,909.85x = 155,771.13 × 65,153.97
  4. Step 4: Simplify right side
    112,909.85x = 10,149,106,752.03
  5. Step 5: Solve for x
    x = 10,149,106,752.03/112,909.85
  6. Step 6: Final answer
    x = 89,886.82

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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.