Home / 98,148.15-135,434.28-55,132.47

Finding the Fourth Proportional to 98,148.15, 135,434.28 and 55,132.47

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Solution

The fourth proportional to 98,148.15, 135,434.28 and 55,132.47 is: 76,077.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,148.15 : 135,434.28 = 55,132.47 : x
  2. Step 2: Convert to fraction form
    98,148.15/135,434.28 = 55,132.47/x
  3. Step 3: Cross multiply
    98,148.15x = 135,434.28 × 55,132.47
  4. Step 4: Simplify right side
    98,148.15x = 7,466,826,103.41
  5. Step 5: Solve for x
    x = 7,466,826,103.41/98,148.15
  6. Step 6: Final answer
    x = 76,077.09

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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.