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Finding the Fourth Proportional to 139,387.80, 192,354.84 and 75,725.04

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Solution

The fourth proportional to 139,387.80, 192,354.84 and 75,725.04 is: 104,500.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,387.80 : 192,354.84 = 75,725.04 : x
  2. Step 2: Convert to fraction form
    139,387.80/192,354.84 = 75,725.04/x
  3. Step 3: Cross multiply
    139,387.80x = 192,354.84 × 75,725.04
  4. Step 4: Simplify right side
    139,387.80x = 14,566,077,953.19
  5. Step 5: Solve for x
    x = 14,566,077,953.19/139,387.80
  6. Step 6: Final answer
    x = 104,500.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.