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Finding the Fourth Proportional to 122,909.84, 169,628.28 and 75,194.92

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Solution

The fourth proportional to 122,909.84, 169,628.28 and 75,194.92 is: 103,776.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,909.84 : 169,628.28 = 75,194.92 : x
  2. Step 2: Convert to fraction form
    122,909.84/169,628.28 = 75,194.92/x
  3. Step 3: Cross multiply
    122,909.84x = 169,628.28 × 75,194.92
  4. Step 4: Simplify right side
    122,909.84x = 12,755,184,944.34
  5. Step 5: Solve for x
    x = 12,755,184,944.34/122,909.84
  6. Step 6: Final answer
    x = 103,776.76

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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.