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Finding the Fourth Proportional to 131,803.16, 181,889.21 and 71,373.80

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Solution

The fourth proportional to 131,803.16, 181,889.21 and 71,373.80 is: 98,496.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,803.16 : 181,889.21 = 71,373.80 : x
  2. Step 2: Convert to fraction form
    131,803.16/181,889.21 = 71,373.80/x
  3. Step 3: Cross multiply
    131,803.16x = 181,889.21 × 71,373.80
  4. Step 4: Simplify right side
    131,803.16x = 12,982,124,729.86
  5. Step 5: Solve for x
    x = 12,982,124,729.86/131,803.16
  6. Step 6: Final answer
    x = 98,496.31

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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.