Home / 117,839.30-162,621.65-64,127.78

Finding the Fourth Proportional to 117,839.30, 162,621.65 and 64,127.78

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Solution

The fourth proportional to 117,839.30, 162,621.65 and 64,127.78 is: 88,498.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,839.30 : 162,621.65 = 64,127.78 : x
  2. Step 2: Convert to fraction form
    117,839.30/162,621.65 = 64,127.78/x
  3. Step 3: Cross multiply
    117,839.30x = 162,621.65 × 64,127.78
  4. Step 4: Simplify right side
    117,839.30x = 10,428,564,987.88
  5. Step 5: Solve for x
    x = 10,428,564,987.88/117,839.30
  6. Step 6: Final answer
    x = 88,498.19

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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.