Home / 131,505.09-181,473.40-74,143.92

Finding the Fourth Proportional to 131,505.09, 181,473.40 and 74,143.92

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Solution

The fourth proportional to 131,505.09, 181,473.40 and 74,143.92 is: 102,316.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,505.09 : 181,473.40 = 74,143.92 : x
  2. Step 2: Convert to fraction form
    131,505.09/181,473.40 = 74,143.92/x
  3. Step 3: Cross multiply
    131,505.09x = 181,473.40 × 74,143.92
  4. Step 4: Simplify right side
    131,505.09x = 13,455,149,520.05
  5. Step 5: Solve for x
    x = 13,455,149,520.05/131,505.09
  6. Step 6: Final answer
    x = 102,316.57

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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.