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Finding the Fourth Proportional to 201,440.60, 278,002.50 and 120,866.12

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Solution

The fourth proportional to 201,440.60, 278,002.50 and 120,866.12 is: 166,803.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,440.60 : 278,002.50 = 120,866.12 : x
  2. Step 2: Convert to fraction form
    201,440.60/278,002.50 = 120,866.12/x
  3. Step 3: Cross multiply
    201,440.60x = 278,002.50 × 120,866.12
  4. Step 4: Simplify right side
    201,440.60x = 33,601,083,525.30
  5. Step 5: Solve for x
    x = 33,601,083,525.30/201,440.60
  6. Step 6: Final answer
    x = 166,803.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.