Home / 147,819.30-221,473.80-68,771.40

Finding the Fourth Proportional to 147,819.30, 221,473.80 and 68,771.40

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Solution

The fourth proportional to 147,819.30, 221,473.80 and 68,771.40 is: 103,038.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,819.30 : 221,473.80 = 68,771.40 : x
  2. Step 2: Convert to fraction form
    147,819.30/221,473.80 = 68,771.40/x
  3. Step 3: Cross multiply
    147,819.30x = 221,473.80 × 68,771.40
  4. Step 4: Simplify right side
    147,819.30x = 15,231,063,289.32
  5. Step 5: Solve for x
    x = 15,231,063,289.32/147,819.30
  6. Step 6: Final answer
    x = 103,038.39

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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.