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Finding the Fourth Proportional to 140,660.64, 210,990.30 and 57,554.64

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Solution

The fourth proportional to 140,660.64, 210,990.30 and 57,554.64 is: 86,331.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,660.64 : 210,990.30 = 57,554.64 : x
  2. Step 2: Convert to fraction form
    140,660.64/210,990.30 = 57,554.64/x
  3. Step 3: Cross multiply
    140,660.64x = 210,990.30 × 57,554.64
  4. Step 4: Simplify right side
    140,660.64x = 12,143,470,759.99
  5. Step 5: Solve for x
    x = 12,143,470,759.99/140,660.64
  6. Step 6: Final answer
    x = 86,331.69

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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.