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Finding the Fourth Proportional to 139,685.32, 192,765.18 and 76,023.10

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Solution

The fourth proportional to 139,685.32, 192,765.18 and 76,023.10 is: 104,911.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,685.32 : 192,765.18 = 76,023.10 : x
  2. Step 2: Convert to fraction form
    139,685.32/192,765.18 = 76,023.10/x
  3. Step 3: Cross multiply
    139,685.32x = 192,765.18 × 76,023.10
  4. Step 4: Simplify right side
    139,685.32x = 14,654,606,555.66
  5. Step 5: Solve for x
    x = 14,654,606,555.66/139,685.32
  6. Step 6: Final answer
    x = 104,911.57

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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.