Home / 147,513.79-221,073-138,065.95

Finding the Fourth Proportional to 147,513.79, 221,073 and 138,065.95

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Solution

The fourth proportional to 147,513.79, 221,073 and 138,065.95 is: 206,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,513.79 : 221,073 = 138,065.95 : x
  2. Step 2: Convert to fraction form
    147,513.79/221,073 = 138,065.95/x
  3. Step 3: Cross multiply
    147,513.79x = 221,073 × 138,065.95
  4. Step 4: Simplify right side
    147,513.79x = 30,522,653,764.35
  5. Step 5: Solve for x
    x = 30,522,653,764.35/147,513.79
  6. Step 6: Final answer
    x = 206,913.90

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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.