Home / 172,279.64-258,156.30-72,385.22

Finding the Fourth Proportional to 172,279.64, 258,156.30 and 72,385.22

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Solution

The fourth proportional to 172,279.64, 258,156.30 and 72,385.22 is: 108,467.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,279.64 : 258,156.30 = 72,385.22 : x
  2. Step 2: Convert to fraction form
    172,279.64/258,156.30 = 72,385.22/x
  3. Step 3: Cross multiply
    172,279.64x = 258,156.30 × 72,385.22
  4. Step 4: Simplify right side
    172,279.64x = 18,686,700,569.89
  5. Step 5: Solve for x
    x = 18,686,700,569.89/172,279.64
  6. Step 6: Final answer
    x = 108,467.26

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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.