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Finding the Fourth Proportional to 139,283.35, 192,211.01 and 75,621.15

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Solution

The fourth proportional to 139,283.35, 192,211.01 and 75,621.15 is: 104,357.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,283.35 : 192,211.01 = 75,621.15 : x
  2. Step 2: Convert to fraction form
    139,283.35/192,211.01 = 75,621.15/x
  3. Step 3: Cross multiply
    139,283.35x = 192,211.01 × 75,621.15
  4. Step 4: Simplify right side
    139,283.35x = 14,535,217,618.86
  5. Step 5: Solve for x
    x = 14,535,217,618.86/139,283.35
  6. Step 6: Final answer
    x = 104,357.18

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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.