Home / 128,168.20-176,877.15-73,720.27

Finding the Fourth Proportional to 128,168.20, 176,877.15 and 73,720.27

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Solution

The fourth proportional to 128,168.20, 176,877.15 and 73,720.27 is: 101,736.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,168.20 : 176,877.15 = 73,720.27 : x
  2. Step 2: Convert to fraction form
    128,168.20/176,877.15 = 73,720.27/x
  3. Step 3: Cross multiply
    128,168.20x = 176,877.15 × 73,720.27
  4. Step 4: Simplify right side
    128,168.20x = 13,039,431,254.83
  5. Step 5: Solve for x
    x = 13,039,431,254.83/128,168.20
  6. Step 6: Final answer
    x = 101,736.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.