Home / 131,853.07-181,958.12-71,423.72

Finding the Fourth Proportional to 131,853.07, 181,958.12 and 71,423.72

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Solution

The fourth proportional to 131,853.07, 181,958.12 and 71,423.72 is: 98,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,853.07 : 181,958.12 = 71,423.72 : x
  2. Step 2: Convert to fraction form
    131,853.07/181,958.12 = 71,423.72/x
  3. Step 3: Cross multiply
    131,853.07x = 181,958.12 × 71,423.72
  4. Step 4: Simplify right side
    131,853.07x = 12,996,125,814.61
  5. Step 5: Solve for x
    x = 12,996,125,814.61/131,853.07
  6. Step 6: Final answer
    x = 98,565.21

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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.