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Finding the Fourth Proportional to 147,813.80, 221,720.70 and 88,716.20

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Solution

The fourth proportional to 147,813.80, 221,720.70 and 88,716.20 is: 133,074.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,813.80 : 221,720.70 = 88,716.20 : x
  2. Step 2: Convert to fraction form
    147,813.80/221,720.70 = 88,716.20/x
  3. Step 3: Cross multiply
    147,813.80x = 221,720.70 × 88,716.20
  4. Step 4: Simplify right side
    147,813.80x = 19,670,217,965.34
  5. Step 5: Solve for x
    x = 19,670,217,965.34/147,813.80
  6. Step 6: Final answer
    x = 133,074.30

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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.