Home / 128,275.28-192,445.32-53,372.96

Finding the Fourth Proportional to 128,275.28, 192,445.32 and 53,372.96

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Solution

The fourth proportional to 128,275.28, 192,445.32 and 53,372.96 is: 80,072.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,275.28 : 192,445.32 = 53,372.96 : x
  2. Step 2: Convert to fraction form
    128,275.28/192,445.32 = 53,372.96/x
  3. Step 3: Cross multiply
    128,275.28x = 192,445.32 × 53,372.96
  4. Step 4: Simplify right side
    128,275.28x = 10,271,376,366.55
  5. Step 5: Solve for x
    x = 10,271,376,366.55/128,275.28
  6. Step 6: Final answer
    x = 80,072.92

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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.