Home / 123,311.34-170,169.81-66,722.72

Finding the Fourth Proportional to 123,311.34, 170,169.81 and 66,722.72

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Solution

The fourth proportional to 123,311.34, 170,169.81 and 66,722.72 is: 92,077.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,311.34 : 170,169.81 = 66,722.72 : x
  2. Step 2: Convert to fraction form
    123,311.34/170,169.81 = 66,722.72/x
  3. Step 3: Cross multiply
    123,311.34x = 170,169.81 × 66,722.72
  4. Step 4: Simplify right side
    123,311.34x = 11,354,191,734.23
  5. Step 5: Solve for x
    x = 11,354,191,734.23/123,311.34
  6. Step 6: Final answer
    x = 92,077.43

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1.5x scale

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.