Home / 112,584.66-155,387.70-72,348.72

Finding the Fourth Proportional to 112,584.66, 155,387.70 and 72,348.72

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Solution

The fourth proportional to 112,584.66, 155,387.70 and 72,348.72 is: 99,854.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,584.66 : 155,387.70 = 72,348.72 : x
  2. Step 2: Convert to fraction form
    112,584.66/155,387.70 = 72,348.72/x
  3. Step 3: Cross multiply
    112,584.66x = 155,387.70 × 72,348.72
  4. Step 4: Simplify right side
    112,584.66x = 11,242,101,198.74
  5. Step 5: Solve for x
    x = 11,242,101,198.74/112,584.66
  6. Step 6: Final answer
    x = 99,854.64

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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.