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Finding the Fourth Proportional to 123,279.96, 170,124.67 and 68,832.96

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Solution

The fourth proportional to 123,279.96, 170,124.67 and 68,832.96 is: 94,988.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,279.96 : 170,124.67 = 68,832.96 : x
  2. Step 2: Convert to fraction form
    123,279.96/170,124.67 = 68,832.96/x
  3. Step 3: Cross multiply
    123,279.96x = 170,124.67 × 68,832.96
  4. Step 4: Simplify right side
    123,279.96x = 11,710,184,605.12
  5. Step 5: Solve for x
    x = 11,710,184,605.12/123,279.96
  6. Step 6: Final answer
    x = 94,988.55

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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.