Home / 147,639.70-221,459.55-137,725.30

Finding the Fourth Proportional to 147,639.70, 221,459.55 and 137,725.30

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Solution

The fourth proportional to 147,639.70, 221,459.55 and 137,725.30 is: 206,587.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,639.70 : 221,459.55 = 137,725.30 : x
  2. Step 2: Convert to fraction form
    147,639.70/221,459.55 = 137,725.30/x
  3. Step 3: Cross multiply
    147,639.70x = 221,459.55 × 137,725.30
  4. Step 4: Simplify right side
    147,639.70x = 30,500,582,961.62
  5. Step 5: Solve for x
    x = 30,500,582,961.62/147,639.70
  6. Step 6: Final answer
    x = 206,587.95

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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.