Home / 99,938.60-149,888.70-29,820.20

Finding the Fourth Proportional to 99,938.60, 149,888.70 and 29,820.20

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Solution

The fourth proportional to 99,938.60, 149,888.70 and 29,820.20 is: 44,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,938.60 : 149,888.70 = 29,820.20 : x
  2. Step 2: Convert to fraction form
    99,938.60/149,888.70 = 29,820.20/x
  3. Step 3: Cross multiply
    99,938.60x = 149,888.70 × 29,820.20
  4. Step 4: Simplify right side
    99,938.60x = 4,469,711,011.74
  5. Step 5: Solve for x
    x = 4,469,711,011.74/99,938.60
  6. Step 6: Final answer
    x = 44,724.57

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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.