Home / 149,430.69-206,213.04-81,447.68

Finding the Fourth Proportional to 149,430.69, 206,213.04 and 81,447.68

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Solution

The fourth proportional to 149,430.69, 206,213.04 and 81,447.68 is: 112,397.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,430.69 : 206,213.04 = 81,447.68 : x
  2. Step 2: Convert to fraction form
    149,430.69/206,213.04 = 81,447.68/x
  3. Step 3: Cross multiply
    149,430.69x = 206,213.04 × 81,447.68
  4. Step 4: Simplify right side
    149,430.69x = 16,795,573,049.33
  5. Step 5: Solve for x
    x = 16,795,573,049.33/149,430.69
  6. Step 6: Final answer
    x = 112,397.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.