Home / 147,731.40-221,453.10-84,486.60

Finding the Fourth Proportional to 147,731.40, 221,453.10 and 84,486.60

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Solution

The fourth proportional to 147,731.40, 221,453.10 and 84,486.60 is: 126,647.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,731.40 : 221,453.10 = 84,486.60 : x
  2. Step 2: Convert to fraction form
    147,731.40/221,453.10 = 84,486.60/x
  3. Step 3: Cross multiply
    147,731.40x = 221,453.10 × 84,486.60
  4. Step 4: Simplify right side
    147,731.40x = 18,709,819,478.46
  5. Step 5: Solve for x
    x = 18,709,819,478.46/147,731.40
  6. Step 6: Final answer
    x = 126,647.55

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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.