Home / 149,430.71-206,214.54-81,447.74

Finding the Fourth Proportional to 149,430.71, 206,214.54 and 81,447.74

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Solution

The fourth proportional to 149,430.71, 206,214.54 and 81,447.74 is: 112,397.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,430.71 : 206,214.54 = 81,447.74 : x
  2. Step 2: Convert to fraction form
    149,430.71/206,214.54 = 81,447.74/x
  3. Step 3: Cross multiply
    149,430.71x = 206,214.54 × 81,447.74
  4. Step 4: Simplify right side
    149,430.71x = 16,795,708,238.14
  5. Step 5: Solve for x
    x = 16,795,708,238.14/149,430.71
  6. Step 6: Final answer
    x = 112,397.97

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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.