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Finding the Fourth Proportional to 159,811.20, 239,630.40 and 66,326.40

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Solution

The fourth proportional to 159,811.20, 239,630.40 and 66,326.40 is: 99,453.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,811.20 : 239,630.40 = 66,326.40 : x
  2. Step 2: Convert to fraction form
    159,811.20/239,630.40 = 66,326.40/x
  3. Step 3: Cross multiply
    159,811.20x = 239,630.40 × 66,326.40
  4. Step 4: Simplify right side
    159,811.20x = 15,893,821,762.56
  5. Step 5: Solve for x
    x = 15,893,821,762.56/159,811.20
  6. Step 6: Final answer
    x = 99,453.74

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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.