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Finding the Fourth Proportional to 153,069.12, 229,655.52 and 68,820.48

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Solution

The fourth proportional to 153,069.12, 229,655.52 and 68,820.48 is: 103,254.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,069.12 : 229,655.52 = 68,820.48 : x
  2. Step 2: Convert to fraction form
    153,069.12/229,655.52 = 68,820.48/x
  3. Step 3: Cross multiply
    153,069.12x = 229,655.52 × 68,820.48
  4. Step 4: Simplify right side
    153,069.12x = 15,805,003,121.05
  5. Step 5: Solve for x
    x = 15,805,003,121.05/153,069.12
  6. Step 6: Final answer
    x = 103,254.03

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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.