Home / 139,232.30-192,140.75-75,570.10

Finding the Fourth Proportional to 139,232.30, 192,140.75 and 75,570.10

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Solution

The fourth proportional to 139,232.30, 192,140.75 and 75,570.10 is: 104,286.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,232.30 : 192,140.75 = 75,570.10 : x
  2. Step 2: Convert to fraction form
    139,232.30/192,140.75 = 75,570.10/x
  3. Step 3: Cross multiply
    139,232.30x = 192,140.75 × 75,570.10
  4. Step 4: Simplify right side
    139,232.30x = 14,520,095,691.58
  5. Step 5: Solve for x
    x = 14,520,095,691.58/139,232.30
  6. Step 6: Final answer
    x = 104,286.83

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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.