Home / 131,728.38-181,785.65-71,299.82

Finding the Fourth Proportional to 131,728.38, 181,785.65 and 71,299.82

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Solution

The fourth proportional to 131,728.38, 181,785.65 and 71,299.82 is: 98,394.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,728.38 : 181,785.65 = 71,299.82 : x
  2. Step 2: Convert to fraction form
    131,728.38/181,785.65 = 71,299.82/x
  3. Step 3: Cross multiply
    131,728.38x = 181,785.65 × 71,299.82
  4. Step 4: Simplify right side
    131,728.38x = 12,961,282,858.16
  5. Step 5: Solve for x
    x = 12,961,282,858.16/131,728.38
  6. Step 6: Final answer
    x = 98,394.00

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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.