Home / 135,818.70-187,441.66-79,248.30

Finding the Fourth Proportional to 135,818.70, 187,441.66 and 79,248.30

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Solution

The fourth proportional to 135,818.70, 187,441.66 and 79,248.30 is: 109,369.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,818.70 : 187,441.66 = 79,248.30 : x
  2. Step 2: Convert to fraction form
    135,818.70/187,441.66 = 79,248.30/x
  3. Step 3: Cross multiply
    135,818.70x = 187,441.66 × 79,248.30
  4. Step 4: Simplify right side
    135,818.70x = 14,854,432,904.18
  5. Step 5: Solve for x
    x = 14,854,432,904.18/135,818.70
  6. Step 6: Final answer
    x = 109,369.57

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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.