Home / 131,520.10-181,494.09-74,158.90

Finding the Fourth Proportional to 131,520.10, 181,494.09 and 74,158.90

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Solution

The fourth proportional to 131,520.10, 181,494.09 and 74,158.90 is: 102,337.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,520.10 : 181,494.09 = 74,158.90 : x
  2. Step 2: Convert to fraction form
    131,520.10/181,494.09 = 74,158.90/x
  3. Step 3: Cross multiply
    131,520.10x = 181,494.09 × 74,158.90
  4. Step 4: Simplify right side
    131,520.10x = 13,459,402,070.90
  5. Step 5: Solve for x
    x = 13,459,402,070.90/131,520.10
  6. Step 6: Final answer
    x = 102,337.23

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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.