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Finding the Fourth Proportional to 169,689.03, 254,588.90 and 80,931.01

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Solution

The fourth proportional to 169,689.03, 254,588.90 and 80,931.01 is: 121,422.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,689.03 : 254,588.90 = 80,931.01 : x
  2. Step 2: Convert to fraction form
    169,689.03/254,588.90 = 80,931.01/x
  3. Step 3: Cross multiply
    169,689.03x = 254,588.90 × 80,931.01
  4. Step 4: Simplify right side
    169,689.03x = 20,604,135,538.84
  5. Step 5: Solve for x
    x = 20,604,135,538.84/169,689.03
  6. Step 6: Final answer
    x = 121,422.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.