Home / 135,624.10-187,123.28-79,024.54

Finding the Fourth Proportional to 135,624.10, 187,123.28 and 79,024.54

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Solution

The fourth proportional to 135,624.10, 187,123.28 and 79,024.54 is: 109,031.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,624.10 : 187,123.28 = 79,024.54 : x
  2. Step 2: Convert to fraction form
    135,624.10/187,123.28 = 79,024.54/x
  3. Step 3: Cross multiply
    135,624.10x = 187,123.28 × 79,024.54
  4. Step 4: Simplify right side
    135,624.10x = 14,787,331,125.29
  5. Step 5: Solve for x
    x = 14,787,331,125.29/135,624.10
  6. Step 6: Final answer
    x = 109,031.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.