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Finding the Fourth Proportional to 139,203.42, 192,101.23 and 75,541.20

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Solution

The fourth proportional to 139,203.42, 192,101.23 and 75,541.20 is: 104,247.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,203.42 : 192,101.23 = 75,541.20 : x
  2. Step 2: Convert to fraction form
    139,203.42/192,101.23 = 75,541.20/x
  3. Step 3: Cross multiply
    139,203.42x = 192,101.23 × 75,541.20
  4. Step 4: Simplify right side
    139,203.42x = 14,511,556,475.17
  5. Step 5: Solve for x
    x = 14,511,556,475.17/139,203.42
  6. Step 6: Final answer
    x = 104,247.13

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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.