Home / 147,280.80-221,180.40-142,615.20

Finding the Fourth Proportional to 147,280.80, 221,180.40 and 142,615.20

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Solution

The fourth proportional to 147,280.80, 221,180.40 and 142,615.20 is: 214,173.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,280.80 : 221,180.40 = 142,615.20 : x
  2. Step 2: Convert to fraction form
    147,280.80/221,180.40 = 142,615.20/x
  3. Step 3: Cross multiply
    147,280.80x = 221,180.40 × 142,615.20
  4. Step 4: Simplify right side
    147,280.80x = 31,543,686,982.08
  5. Step 5: Solve for x
    x = 31,543,686,982.08/147,280.80
  6. Step 6: Final answer
    x = 214,173.79

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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.