Home / 139,440.90-192,427.91-79,023.06

Finding the Fourth Proportional to 139,440.90, 192,427.91 and 79,023.06

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Solution

The fourth proportional to 139,440.90, 192,427.91 and 79,023.06 is: 109,051.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,440.90 : 192,427.91 = 79,023.06 : x
  2. Step 2: Convert to fraction form
    139,440.90/192,427.91 = 79,023.06/x
  3. Step 3: Cross multiply
    139,440.90x = 192,427.91 × 79,023.06
  4. Step 4: Simplify right side
    139,440.90x = 15,206,241,882.49
  5. Step 5: Solve for x
    x = 15,206,241,882.49/139,440.90
  6. Step 6: Final answer
    x = 109,051.52

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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.