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Finding the Fourth Proportional to 115,389.20, 173,107.20 and 65,493.20

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Solution

The fourth proportional to 115,389.20, 173,107.20 and 65,493.20 is: 98,253.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,389.20 : 173,107.20 = 65,493.20 : x
  2. Step 2: Convert to fraction form
    115,389.20/173,107.20 = 65,493.20/x
  3. Step 3: Cross multiply
    115,389.20x = 173,107.20 × 65,493.20
  4. Step 4: Simplify right side
    115,389.20x = 11,337,344,471.04
  5. Step 5: Solve for x
    x = 11,337,344,471.04/115,389.20
  6. Step 6: Final answer
    x = 98,253.08

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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.