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Finding the Fourth Proportional to 130,718.84, 196,078.25 and 91,352.84

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Solution

The fourth proportional to 130,718.84, 196,078.25 and 91,352.84 is: 137,029.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,718.84 : 196,078.25 = 91,352.84 : x
  2. Step 2: Convert to fraction form
    130,718.84/196,078.25 = 91,352.84/x
  3. Step 3: Cross multiply
    130,718.84x = 196,078.25 × 91,352.84
  4. Step 4: Simplify right side
    130,718.84x = 17,912,304,999.73
  5. Step 5: Solve for x
    x = 17,912,304,999.73/130,718.84
  6. Step 6: Final answer
    x = 137,029.25

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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.