Home / 112,394.43-155,126.07-72,159.03

Finding the Fourth Proportional to 112,394.43, 155,126.07 and 72,159.03

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Solution

The fourth proportional to 112,394.43, 155,126.07 and 72,159.03 is: 99,593.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,394.43 : 155,126.07 = 72,159.03 : x
  2. Step 2: Convert to fraction form
    112,394.43/155,126.07 = 72,159.03/x
  3. Step 3: Cross multiply
    112,394.43x = 155,126.07 × 72,159.03
  4. Step 4: Simplify right side
    112,394.43x = 11,193,746,738.91
  5. Step 5: Solve for x
    x = 11,193,746,738.91/112,394.43
  6. Step 6: Final answer
    x = 99,593.43

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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.