Home / 115,719.40-173,708.70-89,540.20

Finding the Fourth Proportional to 115,719.40, 173,708.70 and 89,540.20

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Solution

The fourth proportional to 115,719.40, 173,708.70 and 89,540.20 is: 134,410.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,719.40 : 173,708.70 = 89,540.20 : x
  2. Step 2: Convert to fraction form
    115,719.40/173,708.70 = 89,540.20/x
  3. Step 3: Cross multiply
    115,719.40x = 173,708.70 × 89,540.20
  4. Step 4: Simplify right side
    115,719.40x = 15,553,911,739.74
  5. Step 5: Solve for x
    x = 15,553,911,739.74/115,719.40
  6. Step 6: Final answer
    x = 134,410.58

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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.