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Finding the Fourth Proportional to 158,480.80, 218,703.06 and 85,885.70

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Solution

The fourth proportional to 158,480.80, 218,703.06 and 85,885.70 is: 118,522.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,480.80 : 218,703.06 = 85,885.70 : x
  2. Step 2: Convert to fraction form
    158,480.80/218,703.06 = 85,885.70/x
  3. Step 3: Cross multiply
    158,480.80x = 218,703.06 × 85,885.70
  4. Step 4: Simplify right side
    158,480.80x = 18,783,464,306.73
  5. Step 5: Solve for x
    x = 18,783,464,306.73/158,480.80
  6. Step 6: Final answer
    x = 118,522.02

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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.