Home / 129,433.08-194,168.70-66,288.90

Finding the Fourth Proportional to 129,433.08, 194,168.70 and 66,288.90

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Solution

The fourth proportional to 129,433.08, 194,168.70 and 66,288.90 is: 99,443.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,433.08 : 194,168.70 = 66,288.90 : x
  2. Step 2: Convert to fraction form
    129,433.08/194,168.70 = 66,288.90/x
  3. Step 3: Cross multiply
    129,433.08x = 194,168.70 × 66,288.90
  4. Step 4: Simplify right side
    129,433.08x = 12,871,229,537.43
  5. Step 5: Solve for x
    x = 12,871,229,537.43/129,433.08
  6. Step 6: Final answer
    x = 99,443.12

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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.