Home / 131,288.50-181,178.13-71,672.50

Finding the Fourth Proportional to 131,288.50, 181,178.13 and 71,672.50

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Solution

The fourth proportional to 131,288.50, 181,178.13 and 71,672.50 is: 98,908.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,288.50 : 181,178.13 = 71,672.50 : x
  2. Step 2: Convert to fraction form
    131,288.50/181,178.13 = 71,672.50/x
  3. Step 3: Cross multiply
    131,288.50x = 181,178.13 × 71,672.50
  4. Step 4: Simplify right side
    131,288.50x = 12,985,489,522.43
  5. Step 5: Solve for x
    x = 12,985,489,522.43/131,288.50
  6. Step 6: Final answer
    x = 98,908.05

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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.