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Finding the Fourth Proportional to 143,877.60, 198,541.80 and 80,211.60

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Solution

The fourth proportional to 143,877.60, 198,541.80 and 80,211.60 is: 110,686.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,877.60 : 198,541.80 = 80,211.60 : x
  2. Step 2: Convert to fraction form
    143,877.60/198,541.80 = 80,211.60/x
  3. Step 3: Cross multiply
    143,877.60x = 198,541.80 × 80,211.60
  4. Step 4: Simplify right side
    143,877.60x = 15,925,355,444.88
  5. Step 5: Solve for x
    x = 15,925,355,444.88/143,877.60
  6. Step 6: Final answer
    x = 110,686.83

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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.