Home / 172,235.10-258,402.06-72,343.92

Finding the Fourth Proportional to 172,235.10, 258,402.06 and 72,343.92

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Solution

The fourth proportional to 172,235.10, 258,402.06 and 72,343.92 is: 108,536.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,235.10 : 258,402.06 = 72,343.92 : x
  2. Step 2: Convert to fraction form
    172,235.10/258,402.06 = 72,343.92/x
  3. Step 3: Cross multiply
    172,235.10x = 258,402.06 × 72,343.92
  4. Step 4: Simplify right side
    172,235.10x = 18,693,817,956.48
  5. Step 5: Solve for x
    x = 18,693,817,956.48/172,235.10
  6. Step 6: Final answer
    x = 108,536.63

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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.