Home / 123,029.56-169,780.80-66,440.96

Finding the Fourth Proportional to 123,029.56, 169,780.80 and 66,440.96

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Solution

The fourth proportional to 123,029.56, 169,780.80 and 66,440.96 is: 91,688.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,029.56 : 169,780.80 = 66,440.96 : x
  2. Step 2: Convert to fraction form
    123,029.56/169,780.80 = 66,440.96/x
  3. Step 3: Cross multiply
    123,029.56x = 169,780.80 × 66,440.96
  4. Step 4: Simplify right side
    123,029.56x = 11,280,399,341.57
  5. Step 5: Solve for x
    x = 11,280,399,341.57/123,029.56
  6. Step 6: Final answer
    x = 91,688.53

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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.