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Finding the Fourth Proportional to 146,020.60, 219,030.90 and 90,724.60

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Solution

The fourth proportional to 146,020.60, 219,030.90 and 90,724.60 is: 136,086.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,020.60 : 219,030.90 = 90,724.60 : x
  2. Step 2: Convert to fraction form
    146,020.60/219,030.90 = 90,724.60/x
  3. Step 3: Cross multiply
    146,020.60x = 219,030.90 × 90,724.60
  4. Step 4: Simplify right side
    146,020.60x = 19,871,490,790.14
  5. Step 5: Solve for x
    x = 19,871,490,790.14/146,020.60
  6. Step 6: Final answer
    x = 136,086.90

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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.