Home / 98,160.12-135,456.30-55,712.88

Finding the Fourth Proportional to 98,160.12, 135,456.30 and 55,712.88

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Solution

The fourth proportional to 98,160.12, 135,456.30 and 55,712.88 is: 76,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,160.12 : 135,456.30 = 55,712.88 : x
  2. Step 2: Convert to fraction form
    98,160.12/135,456.30 = 55,712.88/x
  3. Step 3: Cross multiply
    98,160.12x = 135,456.30 × 55,712.88
  4. Step 4: Simplify right side
    98,160.12x = 7,546,660,587.14
  5. Step 5: Solve for x
    x = 7,546,660,587.14/98,160.12
  6. Step 6: Final answer
    x = 76,881.13

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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.