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Finding the Fourth Proportional to 146,900.80, 220,424.10 and 83,769.40

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Solution

The fourth proportional to 146,900.80, 220,424.10 and 83,769.40 is: 125,695.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,900.80 : 220,424.10 = 83,769.40 : x
  2. Step 2: Convert to fraction form
    146,900.80/220,424.10 = 83,769.40/x
  3. Step 3: Cross multiply
    146,900.80x = 220,424.10 × 83,769.40
  4. Step 4: Simplify right side
    146,900.80x = 18,464,794,602.54
  5. Step 5: Solve for x
    x = 18,464,794,602.54/146,900.80
  6. Step 6: Final answer
    x = 125,695.67

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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.