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Finding the Fourth Proportional to 169,052.40, 253,870.20 and 90,320.40

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Solution

The fourth proportional to 169,052.40, 253,870.20 and 90,320.40 is: 135,636.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,052.40 : 253,870.20 = 90,320.40 : x
  2. Step 2: Convert to fraction form
    169,052.40/253,870.20 = 90,320.40/x
  3. Step 3: Cross multiply
    169,052.40x = 253,870.20 × 90,320.40
  4. Step 4: Simplify right side
    169,052.40x = 22,929,658,012.08
  5. Step 5: Solve for x
    x = 22,929,658,012.08/169,052.40
  6. Step 6: Final answer
    x = 135,636.39

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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.