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Finding the Fourth Proportional to 123,287.95, 170,134.45 and 69,575.23

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Solution

The fourth proportional to 123,287.95, 170,134.45 and 69,575.23 is: 96,012.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,287.95 : 170,134.45 = 69,575.23 : x
  2. Step 2: Convert to fraction form
    123,287.95/170,134.45 = 69,575.23/x
  3. Step 3: Cross multiply
    123,287.95x = 170,134.45 × 69,575.23
  4. Step 4: Simplify right side
    123,287.95x = 11,837,143,489.67
  5. Step 5: Solve for x
    x = 11,837,143,489.67/123,287.95
  6. Step 6: Final answer
    x = 96,012.17

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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.