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Finding the Fourth Proportional to 121,285.90, 182,256.90 and 106,851.70

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Solution

The fourth proportional to 121,285.90, 182,256.90 and 106,851.70 is: 160,566.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,285.90 : 182,256.90 = 106,851.70 : x
  2. Step 2: Convert to fraction form
    121,285.90/182,256.90 = 106,851.70/x
  3. Step 3: Cross multiply
    121,285.90x = 182,256.90 × 106,851.70
  4. Step 4: Simplify right side
    121,285.90x = 19,474,459,601.73
  5. Step 5: Solve for x
    x = 19,474,459,601.73/121,285.90
  6. Step 6: Final answer
    x = 160,566.56

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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.