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Finding the Fourth Proportional to 98,017, 135,339.66 and 75,320.20

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Solution

The fourth proportional to 98,017, 135,339.66 and 75,320.20 is: 104,000.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,017 : 135,339.66 = 75,320.20 : x
  2. Step 2: Convert to fraction form
    98,017/135,339.66 = 75,320.20/x
  3. Step 3: Cross multiply
    98,017x = 135,339.66 × 75,320.20
  4. Step 4: Simplify right side
    98,017x = 10,193,810,259.13
  5. Step 5: Solve for x
    x = 10,193,810,259.13/98,017
  6. Step 6: Final answer
    x = 104,000.43

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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.