Home / 123,418.68-170,317.65-66,830.05

Finding the Fourth Proportional to 123,418.68, 170,317.65 and 66,830.05

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Solution

The fourth proportional to 123,418.68, 170,317.65 and 66,830.05 is: 92,225.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,418.68 : 170,317.65 = 66,830.05 : x
  2. Step 2: Convert to fraction form
    123,418.68/170,317.65 = 66,830.05/x
  3. Step 3: Cross multiply
    123,418.68x = 170,317.65 × 66,830.05
  4. Step 4: Simplify right side
    123,418.68x = 11,382,337,065.38
  5. Step 5: Solve for x
    x = 11,382,337,065.38/123,418.68
  6. Step 6: Final answer
    x = 92,225.40

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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.