Home / 104,851.13-157,121.12-77,013.05

Finding the Fourth Proportional to 104,851.13, 157,121.12 and 77,013.05

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Solution

The fourth proportional to 104,851.13, 157,121.12 and 77,013.05 is: 115,405.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,851.13 : 157,121.12 = 77,013.05 : x
  2. Step 2: Convert to fraction form
    104,851.13/157,121.12 = 77,013.05/x
  3. Step 3: Cross multiply
    104,851.13x = 157,121.12 × 77,013.05
  4. Step 4: Simplify right side
    104,851.13x = 12,100,375,499.95
  5. Step 5: Solve for x
    x = 12,100,375,499.95/104,851.13
  6. Step 6: Final answer
    x = 115,405.30

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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.