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Finding the Fourth Proportional to 207,151.31, 285,825.93 and 121,093.67

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Solution

The fourth proportional to 207,151.31, 285,825.93 and 121,093.67 is: 167,084.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,151.31 : 285,825.93 = 121,093.67 : x
  2. Step 2: Convert to fraction form
    207,151.31/285,825.93 = 121,093.67/x
  3. Step 3: Cross multiply
    207,151.31x = 285,825.93 × 121,093.67
  4. Step 4: Simplify right side
    207,151.31x = 34,611,710,844.86
  5. Step 5: Solve for x
    x = 34,611,710,844.86/207,151.31
  6. Step 6: Final answer
    x = 167,084.20

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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.