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Finding the Fourth Proportional to 139,672.29, 192,742.02 and 76,010.34

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Solution

The fourth proportional to 139,672.29, 192,742.02 and 76,010.34 is: 104,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,672.29 : 192,742.02 = 76,010.34 : x
  2. Step 2: Convert to fraction form
    139,672.29/192,742.02 = 76,010.34/x
  3. Step 3: Cross multiply
    139,672.29x = 192,742.02 × 76,010.34
  4. Step 4: Simplify right side
    139,672.29x = 14,650,386,472.49
  5. Step 5: Solve for x
    x = 14,650,386,472.49/139,672.29
  6. Step 6: Final answer
    x = 104,891.15

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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.