Home / 149,411.59-206,182.76-81,427.20

Finding the Fourth Proportional to 149,411.59, 206,182.76 and 81,427.20

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Solution

The fourth proportional to 149,411.59, 206,182.76 and 81,427.20 is: 112,366.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,411.59 : 206,182.76 = 81,427.20 : x
  2. Step 2: Convert to fraction form
    149,411.59/206,182.76 = 81,427.20/x
  3. Step 3: Cross multiply
    149,411.59x = 206,182.76 × 81,427.20
  4. Step 4: Simplify right side
    149,411.59x = 16,788,883,654.75
  5. Step 5: Solve for x
    x = 16,788,883,654.75/149,411.59
  6. Step 6: Final answer
    x = 112,366.68

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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.