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Finding the Fourth Proportional to 123,653.93, 170,642.43 and 69,937.80

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Solution

The fourth proportional to 123,653.93, 170,642.43 and 69,937.80 is: 96,514.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,653.93 : 170,642.43 = 69,937.80 : x
  2. Step 2: Convert to fraction form
    123,653.93/170,642.43 = 69,937.80/x
  3. Step 3: Cross multiply
    123,653.93x = 170,642.43 × 69,937.80
  4. Step 4: Simplify right side
    123,653.93x = 11,934,356,140.85
  5. Step 5: Solve for x
    x = 11,934,356,140.85/123,653.93
  6. Step 6: Final answer
    x = 96,514.17

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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.