Home / 103,040.70-154,561.05-79,683.90

Finding the Fourth Proportional to 103,040.70, 154,561.05 and 79,683.90

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Solution

The fourth proportional to 103,040.70, 154,561.05 and 79,683.90 is: 119,525.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,040.70 : 154,561.05 = 79,683.90 : x
  2. Step 2: Convert to fraction form
    103,040.70/154,561.05 = 79,683.90/x
  3. Step 3: Cross multiply
    103,040.70x = 154,561.05 × 79,683.90
  4. Step 4: Simplify right side
    103,040.70x = 12,316,027,252.10
  5. Step 5: Solve for x
    x = 12,316,027,252.10/103,040.70
  6. Step 6: Final answer
    x = 119,525.85

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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.