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Finding the Fourth Proportional to 128,248.46, 192,372.69 and 34,751.78

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Solution

The fourth proportional to 128,248.46, 192,372.69 and 34,751.78 is: 52,127.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,248.46 : 192,372.69 = 34,751.78 : x
  2. Step 2: Convert to fraction form
    128,248.46/192,372.69 = 34,751.78/x
  3. Step 3: Cross multiply
    128,248.46x = 192,372.69 × 34,751.78
  4. Step 4: Simplify right side
    128,248.46x = 6,685,293,400.89
  5. Step 5: Solve for x
    x = 6,685,293,400.89/128,248.46
  6. Step 6: Final answer
    x = 52,127.67

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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.