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Finding the Fourth Proportional to 123,800.75, 170,883.93 and 79,088.75

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Solution

The fourth proportional to 123,800.75, 170,883.93 and 79,088.75 is: 109,167.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,800.75 : 170,883.93 = 79,088.75 : x
  2. Step 2: Convert to fraction form
    123,800.75/170,883.93 = 79,088.75/x
  3. Step 3: Cross multiply
    123,800.75x = 170,883.93 × 79,088.75
  4. Step 4: Simplify right side
    123,800.75x = 13,514,996,418.79
  5. Step 5: Solve for x
    x = 13,514,996,418.79/123,800.75
  6. Step 6: Final answer
    x = 109,167.32

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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.