Home / 115,349.20-173,023.80-85,824.70

Finding the Fourth Proportional to 115,349.20, 173,023.80 and 85,824.70

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Solution

The fourth proportional to 115,349.20, 173,023.80 and 85,824.70 is: 128,737.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,349.20 : 173,023.80 = 85,824.70 : x
  2. Step 2: Convert to fraction form
    115,349.20/173,023.80 = 85,824.70/x
  3. Step 3: Cross multiply
    115,349.20x = 173,023.80 × 85,824.70
  4. Step 4: Simplify right side
    115,349.20x = 14,849,715,727.86
  5. Step 5: Solve for x
    x = 14,849,715,727.86/115,349.20
  6. Step 6: Final answer
    x = 128,737.05

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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.