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Finding the Fourth Proportional to 99,706.20, 149,559.30 and 40,584.30

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Solution

The fourth proportional to 99,706.20, 149,559.30 and 40,584.30 is: 60,876.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,706.20 : 149,559.30 = 40,584.30 : x
  2. Step 2: Convert to fraction form
    99,706.20/149,559.30 = 40,584.30/x
  3. Step 3: Cross multiply
    99,706.20x = 149,559.30 × 40,584.30
  4. Step 4: Simplify right side
    99,706.20x = 6,069,759,498.99
  5. Step 5: Solve for x
    x = 6,069,759,498.99/99,706.20
  6. Step 6: Final answer
    x = 60,876.45

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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.