Home / 112,795.90-155,616.51-72,531.87

Finding the Fourth Proportional to 112,795.90, 155,616.51 and 72,531.87

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Solution

The fourth proportional to 112,795.90, 155,616.51 and 72,531.87 is: 100,067.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,795.90 : 155,616.51 = 72,531.87 : x
  2. Step 2: Convert to fraction form
    112,795.90/155,616.51 = 72,531.87/x
  3. Step 3: Cross multiply
    112,795.90x = 155,616.51 × 72,531.87
  4. Step 4: Simplify right side
    112,795.90x = 11,287,156,473.17
  5. Step 5: Solve for x
    x = 11,287,156,473.17/112,795.90
  6. Step 6: Final answer
    x = 100,067.08

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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.