Home / 129,138.35-193,707.54-40,392.32

Finding the Fourth Proportional to 129,138.35, 193,707.54 and 40,392.32

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Solution

The fourth proportional to 129,138.35, 193,707.54 and 40,392.32 is: 60,588.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,138.35 : 193,707.54 = 40,392.32 : x
  2. Step 2: Convert to fraction form
    129,138.35/193,707.54 = 40,392.32/x
  3. Step 3: Cross multiply
    129,138.35x = 193,707.54 × 40,392.32
  4. Step 4: Simplify right side
    129,138.35x = 7,824,295,973.56
  5. Step 5: Solve for x
    x = 7,824,295,973.56/129,138.35
  6. Step 6: Final answer
    x = 60,588.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.