Home / 123,818.02-170,941.80-75,438.21

Finding the Fourth Proportional to 123,818.02, 170,941.80 and 75,438.21

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Solution

The fourth proportional to 123,818.02, 170,941.80 and 75,438.21 is: 104,149.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,818.02 : 170,941.80 = 75,438.21 : x
  2. Step 2: Convert to fraction form
    123,818.02/170,941.80 = 75,438.21/x
  3. Step 3: Cross multiply
    123,818.02x = 170,941.80 × 75,438.21
  4. Step 4: Simplify right side
    123,818.02x = 12,895,542,174.28
  5. Step 5: Solve for x
    x = 12,895,542,174.28/123,818.02
  6. Step 6: Final answer
    x = 104,149.16

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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.