Home / 123,541.50-170,505.57-78,223.70

Finding the Fourth Proportional to 123,541.50, 170,505.57 and 78,223.70

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Solution

The fourth proportional to 123,541.50, 170,505.57 and 78,223.70 is: 107,960.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,541.50 : 170,505.57 = 78,223.70 : x
  2. Step 2: Convert to fraction form
    123,541.50/170,505.57 = 78,223.70/x
  3. Step 3: Cross multiply
    123,541.50x = 170,505.57 × 78,223.70
  4. Step 4: Simplify right side
    123,541.50x = 13,337,575,703.48
  5. Step 5: Solve for x
    x = 13,337,575,703.48/123,541.50
  6. Step 6: Final answer
    x = 107,960.29

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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.