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Finding the Fourth Proportional to 130,751.59, 196,127.38 and 91,385.59

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Solution

The fourth proportional to 130,751.59, 196,127.38 and 91,385.59 is: 137,078.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,751.59 : 196,127.38 = 91,385.59 : x
  2. Step 2: Convert to fraction form
    130,751.59/196,127.38 = 91,385.59/x
  3. Step 3: Cross multiply
    130,751.59x = 196,127.38 × 91,385.59
  4. Step 4: Simplify right side
    130,751.59x = 17,923,215,355.82
  5. Step 5: Solve for x
    x = 17,923,215,355.82/130,751.59
  6. Step 6: Final answer
    x = 137,078.38

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1.5x scale

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.