Home / 123,320.16-170,182.29-66,731.55

Finding the Fourth Proportional to 123,320.16, 170,182.29 and 66,731.55

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Solution

The fourth proportional to 123,320.16, 170,182.29 and 66,731.55 is: 92,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,320.16 : 170,182.29 = 66,731.55 : x
  2. Step 2: Convert to fraction form
    123,320.16/170,182.29 = 66,731.55/x
  3. Step 3: Cross multiply
    123,320.16x = 170,182.29 × 66,731.55
  4. Step 4: Simplify right side
    123,320.16x = 11,356,527,994.25
  5. Step 5: Solve for x
    x = 11,356,527,994.25/123,320.16
  6. Step 6: Final answer
    x = 92,089.79

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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.