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Finding the Fourth Proportional to 128,233.40, 192,350.10 and 72,937.40

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Solution

The fourth proportional to 128,233.40, 192,350.10 and 72,937.40 is: 109,406.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,233.40 : 192,350.10 = 72,937.40 : x
  2. Step 2: Convert to fraction form
    128,233.40/192,350.10 = 72,937.40/x
  3. Step 3: Cross multiply
    128,233.40x = 192,350.10 × 72,937.40
  4. Step 4: Simplify right side
    128,233.40x = 14,029,516,183.74
  5. Step 5: Solve for x
    x = 14,029,516,183.74/128,233.40
  6. Step 6: Final answer
    x = 109,406.10

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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.