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Finding the Fourth Proportional to 172,242.76, 258,482.22 and 67,062.28

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Solution

The fourth proportional to 172,242.76, 258,482.22 and 67,062.28 is: 100,639.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,242.76 : 258,482.22 = 67,062.28 : x
  2. Step 2: Convert to fraction form
    172,242.76/258,482.22 = 67,062.28/x
  3. Step 3: Cross multiply
    172,242.76x = 258,482.22 × 67,062.28
  4. Step 4: Simplify right side
    172,242.76x = 17,334,407,012.66
  5. Step 5: Solve for x
    x = 17,334,407,012.66/172,242.76
  6. Step 6: Final answer
    x = 100,639.39

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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.