Home / 131,340.12-181,249.02-71,724.12

Finding the Fourth Proportional to 131,340.12, 181,249.02 and 71,724.12

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Solution

The fourth proportional to 131,340.12, 181,249.02 and 71,724.12 is: 98,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,340.12 : 181,249.02 = 71,724.12 : x
  2. Step 2: Convert to fraction form
    131,340.12/181,249.02 = 71,724.12/x
  3. Step 3: Cross multiply
    131,340.12x = 181,249.02 × 71,724.12
  4. Step 4: Simplify right side
    131,340.12x = 12,999,926,460.36
  5. Step 5: Solve for x
    x = 12,999,926,460.36/131,340.12
  6. Step 6: Final answer
    x = 98,979.10

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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.