Home / 123,340.38-170,209.70-66,751.74

Finding the Fourth Proportional to 123,340.38, 170,209.70 and 66,751.74

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Solution

The fourth proportional to 123,340.38, 170,209.70 and 66,751.74 is: 92,117.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,340.38 : 170,209.70 = 66,751.74 : x
  2. Step 2: Convert to fraction form
    123,340.38/170,209.70 = 66,751.74/x
  3. Step 3: Cross multiply
    123,340.38x = 170,209.70 × 66,751.74
  4. Step 4: Simplify right side
    123,340.38x = 11,361,793,639.88
  5. Step 5: Solve for x
    x = 11,361,793,639.88/123,340.38
  6. Step 6: Final answer
    x = 92,117.39

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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.