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Finding the Fourth Proportional to 91,069.70, 136,604.55 and 82,904.90

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Solution

The fourth proportional to 91,069.70, 136,604.55 and 82,904.90 is: 124,357.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,069.70 : 136,604.55 = 82,904.90 : x
  2. Step 2: Convert to fraction form
    91,069.70/136,604.55 = 82,904.90/x
  3. Step 3: Cross multiply
    91,069.70x = 136,604.55 × 82,904.90
  4. Step 4: Simplify right side
    91,069.70x = 11,325,186,557.30
  5. Step 5: Solve for x
    x = 11,325,186,557.30/91,069.70
  6. Step 6: Final answer
    x = 124,357.35

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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.