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Finding the Fourth Proportional to 115,427.20, 173,148.90 and 65,531.20

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Solution

The fourth proportional to 115,427.20, 173,148.90 and 65,531.20 is: 98,301.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,427.20 : 173,148.90 = 65,531.20 : x
  2. Step 2: Convert to fraction form
    115,427.20/173,148.90 = 65,531.20/x
  3. Step 3: Cross multiply
    115,427.20x = 173,148.90 × 65,531.20
  4. Step 4: Simplify right side
    115,427.20x = 11,346,655,195.68
  5. Step 5: Solve for x
    x = 11,346,655,195.68/115,427.20
  6. Step 6: Final answer
    x = 98,301.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.