Home / 131,708.45-181,758.13-71,279.08

Finding the Fourth Proportional to 131,708.45, 181,758.13 and 71,279.08

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Solution

The fourth proportional to 131,708.45, 181,758.13 and 71,279.08 is: 98,365.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,708.45 : 181,758.13 = 71,279.08 : x
  2. Step 2: Convert to fraction form
    131,708.45/181,758.13 = 71,279.08/x
  3. Step 3: Cross multiply
    131,708.45x = 181,758.13 × 71,279.08
  4. Step 4: Simplify right side
    131,708.45x = 12,955,552,288.92
  5. Step 5: Solve for x
    x = 12,955,552,288.92/131,708.45
  6. Step 6: Final answer
    x = 98,365.38

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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.