Home / 120,757.36-181,168.85-85,918.45

Finding the Fourth Proportional to 120,757.36, 181,168.85 and 85,918.45

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Solution

The fourth proportional to 120,757.36, 181,168.85 and 85,918.45 is: 128,901.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,757.36 : 181,168.85 = 85,918.45 : x
  2. Step 2: Convert to fraction form
    120,757.36/181,168.85 = 85,918.45/x
  3. Step 3: Cross multiply
    120,757.36x = 181,168.85 × 85,918.45
  4. Step 4: Simplify right side
    120,757.36x = 15,565,746,780.28
  5. Step 5: Solve for x
    x = 15,565,746,780.28/120,757.36
  6. Step 6: Final answer
    x = 128,901.02

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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.