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Finding the Fourth Proportional to 192,140.34, 288,211.36 and 79,820.47

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Solution

The fourth proportional to 192,140.34, 288,211.36 and 79,820.47 is: 119,731.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,140.34 : 288,211.36 = 79,820.47 : x
  2. Step 2: Convert to fraction form
    192,140.34/288,211.36 = 79,820.47/x
  3. Step 3: Cross multiply
    192,140.34x = 288,211.36 × 79,820.47
  4. Step 4: Simplify right side
    192,140.34x = 23,005,164,374.38
  5. Step 5: Solve for x
    x = 23,005,164,374.38/192,140.34
  6. Step 6: Final answer
    x = 119,731.05

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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.