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Finding the Fourth Proportional to 122,116.74, 168,436.97 and 85,895.01

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Solution

The fourth proportional to 122,116.74, 168,436.97 and 85,895.01 is: 118,475.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,116.74 : 168,436.97 = 85,895.01 : x
  2. Step 2: Convert to fraction form
    122,116.74/168,436.97 = 85,895.01/x
  3. Step 3: Cross multiply
    122,116.74x = 168,436.97 × 85,895.01
  4. Step 4: Simplify right side
    122,116.74x = 14,467,894,793.04
  5. Step 5: Solve for x
    x = 14,467,894,793.04/122,116.74
  6. Step 6: Final answer
    x = 118,475.93

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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.