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Finding the Fourth Proportional to 159,955.56, 240,078.74 and 85,138.29

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Solution

The fourth proportional to 159,955.56, 240,078.74 and 85,138.29 is: 127,784.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,955.56 : 240,078.74 = 85,138.29 : x
  2. Step 2: Convert to fraction form
    159,955.56/240,078.74 = 85,138.29/x
  3. Step 3: Cross multiply
    159,955.56x = 240,078.74 × 85,138.29
  4. Step 4: Simplify right side
    159,955.56x = 20,439,892,963.26
  5. Step 5: Solve for x
    x = 20,439,892,963.26/159,955.56
  6. Step 6: Final answer
    x = 127,784.82

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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.