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Finding the Fourth Proportional to 128,325.57, 192,510.22 and 39,562.53

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Solution

The fourth proportional to 128,325.57, 192,510.22 and 39,562.53 is: 59,350.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,325.57 : 192,510.22 = 39,562.53 : x
  2. Step 2: Convert to fraction form
    128,325.57/192,510.22 = 39,562.53/x
  3. Step 3: Cross multiply
    128,325.57x = 192,510.22 × 39,562.53
  4. Step 4: Simplify right side
    128,325.57x = 7,616,190,607.42
  5. Step 5: Solve for x
    x = 7,616,190,607.42/128,325.57
  6. Step 6: Final answer
    x = 59,350.53

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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.