Home / 123,013.74-169,790.63-80,100.34

Finding the Fourth Proportional to 123,013.74, 169,790.63 and 80,100.34

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Solution

The fourth proportional to 123,013.74, 169,790.63 and 80,100.34 is: 110,559.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,013.74 : 169,790.63 = 80,100.34 : x
  2. Step 2: Convert to fraction form
    123,013.74/169,790.63 = 80,100.34/x
  3. Step 3: Cross multiply
    123,013.74x = 169,790.63 × 80,100.34
  4. Step 4: Simplify right side
    123,013.74x = 13,600,287,772.47
  5. Step 5: Solve for x
    x = 13,600,287,772.47/123,013.74
  6. Step 6: Final answer
    x = 110,559.10

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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.