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Finding the Fourth Proportional to 122,423.60, 168,961.06 and 68,711.56

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Solution

The fourth proportional to 122,423.60, 168,961.06 and 68,711.56 is: 94,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,423.60 : 168,961.06 = 68,711.56 : x
  2. Step 2: Convert to fraction form
    122,423.60/168,961.06 = 68,711.56/x
  3. Step 3: Cross multiply
    122,423.60x = 168,961.06 × 68,711.56
  4. Step 4: Simplify right side
    122,423.60x = 11,609,577,417.67
  5. Step 5: Solve for x
    x = 11,609,577,417.67/122,423.60
  6. Step 6: Final answer
    x = 94,831.20

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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.