Home / 112,663.38-155,309.82-85,759.02

Finding the Fourth Proportional to 112,663.38, 155,309.82 and 85,759.02

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Solution

The fourth proportional to 112,663.38, 155,309.82 and 85,759.02 is: 118,221.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,663.38 : 155,309.82 = 85,759.02 : x
  2. Step 2: Convert to fraction form
    112,663.38/155,309.82 = 85,759.02/x
  3. Step 3: Cross multiply
    112,663.38x = 155,309.82 × 85,759.02
  4. Step 4: Simplify right side
    112,663.38x = 13,319,217,959.58
  5. Step 5: Solve for x
    x = 13,319,217,959.58/112,663.38
  6. Step 6: Final answer
    x = 118,221.36

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1.5x scale

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.