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Finding the Fourth Proportional to 159,946.67, 240,065.10 and 85,129.81

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Solution

The fourth proportional to 159,946.67, 240,065.10 and 85,129.81 is: 127,771.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,946.67 : 240,065.10 = 85,129.81 : x
  2. Step 2: Convert to fraction form
    159,946.67/240,065.10 = 85,129.81/x
  3. Step 3: Cross multiply
    159,946.67x = 240,065.10 × 85,129.81
  4. Step 4: Simplify right side
    159,946.67x = 20,436,695,750.47
  5. Step 5: Solve for x
    x = 20,436,695,750.47/159,946.67
  6. Step 6: Final answer
    x = 127,771.93

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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.