Home / 131,809.56-181,897.36-71,380.30

Finding the Fourth Proportional to 131,809.56, 181,897.36 and 71,380.30

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Solution

The fourth proportional to 131,809.56, 181,897.36 and 71,380.30 is: 98,504.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.56 : 181,897.36 = 71,380.30 : x
  2. Step 2: Convert to fraction form
    131,809.56/181,897.36 = 71,380.30/x
  3. Step 3: Cross multiply
    131,809.56x = 181,897.36 × 71,380.30
  4. Step 4: Simplify right side
    131,809.56x = 12,983,887,216.52
  5. Step 5: Solve for x
    x = 12,983,887,216.52/131,809.56
  6. Step 6: Final answer
    x = 98,504.90

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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.