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Finding the Fourth Proportional to 115,879.40, 173,948.70 and 89,700.20

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Solution

The fourth proportional to 115,879.40, 173,948.70 and 89,700.20 is: 134,650.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,879.40 : 173,948.70 = 89,700.20 : x
  2. Step 2: Convert to fraction form
    115,879.40/173,948.70 = 89,700.20/x
  3. Step 3: Cross multiply
    115,879.40x = 173,948.70 × 89,700.20
  4. Step 4: Simplify right side
    115,879.40x = 15,603,233,179.74
  5. Step 5: Solve for x
    x = 15,603,233,179.74/115,879.40
  6. Step 6: Final answer
    x = 134,650.62

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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.