Home / 147,815.42-221,990.40-136,558.64

Finding the Fourth Proportional to 147,815.42, 221,990.40 and 136,558.64

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Solution

The fourth proportional to 147,815.42, 221,990.40 and 136,558.64 is: 205,084.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,815.42 : 221,990.40 = 136,558.64 : x
  2. Step 2: Convert to fraction form
    147,815.42/221,990.40 = 136,558.64/x
  3. Step 3: Cross multiply
    147,815.42x = 221,990.40 × 136,558.64
  4. Step 4: Simplify right side
    147,815.42x = 30,314,707,672.03
  5. Step 5: Solve for x
    x = 30,314,707,672.03/147,815.42
  6. Step 6: Final answer
    x = 205,084.89

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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.