Home / 105,368.38-158,123.66-38,861.72

Finding the Fourth Proportional to 105,368.38, 158,123.66 and 38,861.72

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Solution

The fourth proportional to 105,368.38, 158,123.66 and 38,861.72 is: 58,318.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,368.38 : 158,123.66 = 38,861.72 : x
  2. Step 2: Convert to fraction form
    105,368.38/158,123.66 = 38,861.72/x
  3. Step 3: Cross multiply
    105,368.38x = 158,123.66 × 38,861.72
  4. Step 4: Simplify right side
    105,368.38x = 6,144,957,400.30
  5. Step 5: Solve for x
    x = 6,144,957,400.30/105,368.38
  6. Step 6: Final answer
    x = 58,318.80

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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.