Home / 115,489.40-173,363.70-89,310.20

Finding the Fourth Proportional to 115,489.40, 173,363.70 and 89,310.20

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Solution

The fourth proportional to 115,489.40, 173,363.70 and 89,310.20 is: 134,065.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,489.40 : 173,363.70 = 89,310.20 : x
  2. Step 2: Convert to fraction form
    115,489.40/173,363.70 = 89,310.20/x
  3. Step 3: Cross multiply
    115,489.40x = 173,363.70 × 89,310.20
  4. Step 4: Simplify right side
    115,489.40x = 15,483,146,719.74
  5. Step 5: Solve for x
    x = 15,483,146,719.74/115,489.40
  6. Step 6: Final answer
    x = 134,065.52

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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.