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Finding the Fourth Proportional to 154,552.90, 231,642.15 and 65,619.70

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Solution

The fourth proportional to 154,552.90, 231,642.15 and 65,619.70 is: 98,350.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,552.90 : 231,642.15 = 65,619.70 : x
  2. Step 2: Convert to fraction form
    154,552.90/231,642.15 = 65,619.70/x
  3. Step 3: Cross multiply
    154,552.90x = 231,642.15 × 65,619.70
  4. Step 4: Simplify right side
    154,552.90x = 15,200,288,390.36
  5. Step 5: Solve for x
    x = 15,200,288,390.36/154,552.90
  6. Step 6: Final answer
    x = 98,350.07

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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.