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Finding the Fourth Proportional to 128,114.46, 192,149.82 and 60,652.80

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Solution

The fourth proportional to 128,114.46, 192,149.82 and 60,652.80 is: 90,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,114.46 : 192,149.82 = 60,652.80 : x
  2. Step 2: Convert to fraction form
    128,114.46/192,149.82 = 60,652.80/x
  3. Step 3: Cross multiply
    128,114.46x = 192,149.82 × 60,652.80
  4. Step 4: Simplify right side
    128,114.46x = 11,654,424,602.50
  5. Step 5: Solve for x
    x = 11,654,424,602.50/128,114.46
  6. Step 6: Final answer
    x = 90,968.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.