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Finding the Fourth Proportional to 172,319.80, 258,479.70 and 93,587.80

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Solution

The fourth proportional to 172,319.80, 258,479.70 and 93,587.80 is: 140,381.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,319.80 : 258,479.70 = 93,587.80 : x
  2. Step 2: Convert to fraction form
    172,319.80/258,479.70 = 93,587.80/x
  3. Step 3: Cross multiply
    172,319.80x = 258,479.70 × 93,587.80
  4. Step 4: Simplify right side
    172,319.80x = 24,190,546,467.66
  5. Step 5: Solve for x
    x = 24,190,546,467.66/172,319.80
  6. Step 6: Final answer
    x = 140,381.70

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1.5x scale

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.