Home / 126,486.43-174,557.99-72,779.60

Finding the Fourth Proportional to 126,486.43, 174,557.99 and 72,779.60

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Solution

The fourth proportional to 126,486.43, 174,557.99 and 72,779.60 is: 100,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,486.43 : 174,557.99 = 72,779.60 : x
  2. Step 2: Convert to fraction form
    126,486.43/174,557.99 = 72,779.60/x
  3. Step 3: Cross multiply
    126,486.43x = 174,557.99 × 72,779.60
  4. Step 4: Simplify right side
    126,486.43x = 12,704,260,689.00
  5. Step 5: Solve for x
    x = 12,704,260,689.00/126,486.43
  6. Step 6: Final answer
    x = 100,439.71

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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.