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Finding the Fourth Proportional to 139,015.38, 191,841.36 and 75,353.16

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Solution

The fourth proportional to 139,015.38, 191,841.36 and 75,353.16 is: 103,987.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,015.38 : 191,841.36 = 75,353.16 : x
  2. Step 2: Convert to fraction form
    139,015.38/191,841.36 = 75,353.16/x
  3. Step 3: Cross multiply
    139,015.38x = 191,841.36 × 75,353.16
  4. Step 4: Simplify right side
    139,015.38x = 14,455,852,694.70
  5. Step 5: Solve for x
    x = 14,455,852,694.70/139,015.38
  6. Step 6: Final answer
    x = 103,987.43

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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.