Home / 165,921.30-248,962.95-77,129.10

Finding the Fourth Proportional to 165,921.30, 248,962.95 and 77,129.10

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Solution

The fourth proportional to 165,921.30, 248,962.95 and 77,129.10 is: 115,731.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,921.30 : 248,962.95 = 77,129.10 : x
  2. Step 2: Convert to fraction form
    165,921.30/248,962.95 = 77,129.10/x
  3. Step 3: Cross multiply
    165,921.30x = 248,962.95 × 77,129.10
  4. Step 4: Simplify right side
    165,921.30x = 19,202,288,266.85
  5. Step 5: Solve for x
    x = 19,202,288,266.85/165,921.30
  6. Step 6: Final answer
    x = 115,731.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.