Home / 123,468.18-170,385.93-66,879.78

Finding the Fourth Proportional to 123,468.18, 170,385.93 and 66,879.78

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Solution

The fourth proportional to 123,468.18, 170,385.93 and 66,879.78 is: 92,294.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,468.18 : 170,385.93 = 66,879.78 : x
  2. Step 2: Convert to fraction form
    123,468.18/170,385.93 = 66,879.78/x
  3. Step 3: Cross multiply
    123,468.18x = 170,385.93 × 66,879.78
  4. Step 4: Simplify right side
    123,468.18x = 11,395,373,513.50
  5. Step 5: Solve for x
    x = 11,395,373,513.50/123,468.18
  6. Step 6: Final answer
    x = 92,294.01

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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.