Home / 115,678.88-159,635.74-64,691.03

Finding the Fourth Proportional to 115,678.88, 159,635.74 and 64,691.03

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Solution

The fourth proportional to 115,678.88, 159,635.74 and 64,691.03 is: 89,273.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,678.88 : 159,635.74 = 64,691.03 : x
  2. Step 2: Convert to fraction form
    115,678.88/159,635.74 = 64,691.03/x
  3. Step 3: Cross multiply
    115,678.88x = 159,635.74 × 64,691.03
  4. Step 4: Simplify right side
    115,678.88x = 10,327,000,445.41
  5. Step 5: Solve for x
    x = 10,327,000,445.41/115,678.88
  6. Step 6: Final answer
    x = 89,273.00

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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.