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Finding the Fourth Proportional to 192,703.80, 288,666.90 and 129,718.20

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Solution

The fourth proportional to 192,703.80, 288,666.90 and 129,718.20 is: 194,315.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,703.80 : 288,666.90 = 129,718.20 : x
  2. Step 2: Convert to fraction form
    192,703.80/288,666.90 = 129,718.20/x
  3. Step 3: Cross multiply
    192,703.80x = 288,666.90 × 129,718.20
  4. Step 4: Simplify right side
    192,703.80x = 37,445,350,667.58
  5. Step 5: Solve for x
    x = 37,445,350,667.58/192,703.80
  6. Step 6: Final answer
    x = 194,315.58

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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.