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Finding the Fourth Proportional to 115,410.70, 173,139.45 and 65,514.70

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Solution

The fourth proportional to 115,410.70, 173,139.45 and 65,514.70 is: 98,285.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,410.70 : 173,139.45 = 65,514.70 : x
  2. Step 2: Convert to fraction form
    115,410.70/173,139.45 = 65,514.70/x
  3. Step 3: Cross multiply
    115,410.70x = 173,139.45 × 65,514.70
  4. Step 4: Simplify right side
    115,410.70x = 11,343,179,124.92
  5. Step 5: Solve for x
    x = 11,343,179,124.92/115,410.70
  6. Step 6: Final answer
    x = 98,285.33

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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.