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Finding the Fourth Proportional to 154,043.73, 212,559.30 and 86,052.30

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Solution

The fourth proportional to 154,043.73, 212,559.30 and 86,052.30 is: 118,740.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,043.73 : 212,559.30 = 86,052.30 : x
  2. Step 2: Convert to fraction form
    154,043.73/212,559.30 = 86,052.30/x
  3. Step 3: Cross multiply
    154,043.73x = 212,559.30 × 86,052.30
  4. Step 4: Simplify right side
    154,043.73x = 18,291,216,651.39
  5. Step 5: Solve for x
    x = 18,291,216,651.39/154,043.73
  6. Step 6: Final answer
    x = 118,740.42

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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.