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Finding the Fourth Proportional to 139,502.19, 192,514.92 and 75,841.32

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Solution

The fourth proportional to 139,502.19, 192,514.92 and 75,841.32 is: 104,662.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,502.19 : 192,514.92 = 75,841.32 : x
  2. Step 2: Convert to fraction form
    139,502.19/192,514.92 = 75,841.32/x
  3. Step 3: Cross multiply
    139,502.19x = 192,514.92 × 75,841.32
  4. Step 4: Simplify right side
    139,502.19x = 14,600,585,652.49
  5. Step 5: Solve for x
    x = 14,600,585,652.49/139,502.19
  6. Step 6: Final answer
    x = 104,662.05

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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.