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Finding the Fourth Proportional to 169,631.80, 254,447.70 and 166,521.40

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Solution

The fourth proportional to 169,631.80, 254,447.70 and 166,521.40 is: 249,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,631.80 : 254,447.70 = 166,521.40 : x
  2. Step 2: Convert to fraction form
    169,631.80/254,447.70 = 166,521.40/x
  3. Step 3: Cross multiply
    169,631.80x = 254,447.70 × 166,521.40
  4. Step 4: Simplify right side
    169,631.80x = 42,370,987,230.78
  5. Step 5: Solve for x
    x = 42,370,987,230.78/169,631.80
  6. Step 6: Final answer
    x = 249,782.10

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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.