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Finding the Fourth Proportional to 147,987.70, 221,799.30 and 100,602.70

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Solution

The fourth proportional to 147,987.70, 221,799.30 and 100,602.70 is: 150,780.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,987.70 : 221,799.30 = 100,602.70 : x
  2. Step 2: Convert to fraction form
    147,987.70/221,799.30 = 100,602.70/x
  3. Step 3: Cross multiply
    147,987.70x = 221,799.30 × 100,602.70
  4. Step 4: Simplify right side
    147,987.70x = 22,313,608,438.11
  5. Step 5: Solve for x
    x = 22,313,608,438.11/147,987.70
  6. Step 6: Final answer
    x = 150,780.16

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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.