Home / 102,916.20-154,374.30-79,588.20

Finding the Fourth Proportional to 102,916.20, 154,374.30 and 79,588.20

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Solution

The fourth proportional to 102,916.20, 154,374.30 and 79,588.20 is: 119,382.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,916.20 : 154,374.30 = 79,588.20 : x
  2. Step 2: Convert to fraction form
    102,916.20/154,374.30 = 79,588.20/x
  3. Step 3: Cross multiply
    102,916.20x = 154,374.30 × 79,588.20
  4. Step 4: Simplify right side
    102,916.20x = 12,286,372,663.26
  5. Step 5: Solve for x
    x = 12,286,372,663.26/102,916.20
  6. Step 6: Final answer
    x = 119,382.30

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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.