Home / 147,905.80-221,858.70-142,000.90

Finding the Fourth Proportional to 147,905.80, 221,858.70 and 142,000.90

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Solution

The fourth proportional to 147,905.80, 221,858.70 and 142,000.90 is: 213,001.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,905.80 : 221,858.70 = 142,000.90 : x
  2. Step 2: Convert to fraction form
    147,905.80/221,858.70 = 142,000.90/x
  3. Step 3: Cross multiply
    147,905.80x = 221,858.70 × 142,000.90
  4. Step 4: Simplify right side
    147,905.80x = 31,504,135,072.83
  5. Step 5: Solve for x
    x = 31,504,135,072.83/147,905.80
  6. Step 6: Final answer
    x = 213,001.35

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1.5x scale

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.