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Finding the Fourth Proportional to 169,881.80, 254,853.30 and 69,987.40

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Solution

The fourth proportional to 169,881.80, 254,853.30 and 69,987.40 is: 104,993.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,881.80 : 254,853.30 = 69,987.40 : x
  2. Step 2: Convert to fraction form
    169,881.80/254,853.30 = 69,987.40/x
  3. Step 3: Cross multiply
    169,881.80x = 254,853.30 × 69,987.40
  4. Step 4: Simplify right side
    169,881.80x = 17,836,519,848.42
  5. Step 5: Solve for x
    x = 17,836,519,848.42/169,881.80
  6. Step 6: Final answer
    x = 104,993.71

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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.