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Finding the Fourth Proportional to 128,259.97, 192,389.96 and 34,765.72

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Solution

The fourth proportional to 128,259.97, 192,389.96 and 34,765.72 is: 52,148.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,259.97 : 192,389.96 = 34,765.72 : x
  2. Step 2: Convert to fraction form
    128,259.97/192,389.96 = 34,765.72/x
  3. Step 3: Cross multiply
    128,259.97x = 192,389.96 × 34,765.72
  4. Step 4: Simplify right side
    128,259.97x = 6,688,575,306.34
  5. Step 5: Solve for x
    x = 6,688,575,306.34/128,259.97
  6. Step 6: Final answer
    x = 52,148.58

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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.