Home / 115,337.20-173,005.80-85,812.70

Finding the Fourth Proportional to 115,337.20, 173,005.80 and 85,812.70

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Solution

The fourth proportional to 115,337.20, 173,005.80 and 85,812.70 is: 128,719.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,337.20 : 173,005.80 = 85,812.70 : x
  2. Step 2: Convert to fraction form
    115,337.20/173,005.80 = 85,812.70/x
  3. Step 3: Cross multiply
    115,337.20x = 173,005.80 × 85,812.70
  4. Step 4: Simplify right side
    115,337.20x = 14,846,094,813.66
  5. Step 5: Solve for x
    x = 14,846,094,813.66/115,337.20
  6. Step 6: Final answer
    x = 128,719.05

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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.