Home / 126,478.90-174,543.38-69,121.77

Finding the Fourth Proportional to 126,478.90, 174,543.38 and 69,121.77

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Solution

The fourth proportional to 126,478.90, 174,543.38 and 69,121.77 is: 95,389.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,478.90 : 174,543.38 = 69,121.77 : x
  2. Step 2: Convert to fraction form
    126,478.90/174,543.38 = 69,121.77/x
  3. Step 3: Cross multiply
    126,478.90x = 174,543.38 × 69,121.77
  4. Step 4: Simplify right side
    126,478.90x = 12,064,747,540.19
  5. Step 5: Solve for x
    x = 12,064,747,540.19/126,478.90
  6. Step 6: Final answer
    x = 95,389.41

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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.