Home / 131,423.75-181,364.79-71,807.75

Finding the Fourth Proportional to 131,423.75, 181,364.79 and 71,807.75

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Solution

The fourth proportional to 131,423.75, 181,364.79 and 71,807.75 is: 99,094.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,423.75 : 181,364.79 = 71,807.75 : x
  2. Step 2: Convert to fraction form
    131,423.75/181,364.79 = 71,807.75/x
  3. Step 3: Cross multiply
    131,423.75x = 181,364.79 × 71,807.75
  4. Step 4: Simplify right side
    131,423.75x = 13,023,397,499.12
  5. Step 5: Solve for x
    x = 13,023,397,499.12/131,423.75
  6. Step 6: Final answer
    x = 99,094.70

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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.