Home / 123,455.20-170,366.16-66,866.08

Finding the Fourth Proportional to 123,455.20, 170,366.16 and 66,866.08

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Solution

The fourth proportional to 123,455.20, 170,366.16 and 66,866.08 is: 92,274.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,455.20 : 170,366.16 = 66,866.08 : x
  2. Step 2: Convert to fraction form
    123,455.20/170,366.16 = 66,866.08/x
  3. Step 3: Cross multiply
    123,455.20x = 170,366.16 × 66,866.08
  4. Step 4: Simplify right side
    123,455.20x = 11,391,717,283.85
  5. Step 5: Solve for x
    x = 11,391,717,283.85/123,455.20
  6. Step 6: Final answer
    x = 92,274.10

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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.