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Finding the Fourth Proportional to 109,532.31, 151,154.60 and 59,231.31

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Solution

The fourth proportional to 109,532.31, 151,154.60 and 59,231.31 is: 81,739.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,532.31 : 151,154.60 = 59,231.31 : x
  2. Step 2: Convert to fraction form
    109,532.31/151,154.60 = 59,231.31/x
  3. Step 3: Cross multiply
    109,532.31x = 151,154.60 × 59,231.31
  4. Step 4: Simplify right side
    109,532.31x = 8,953,084,970.53
  5. Step 5: Solve for x
    x = 8,953,084,970.53/109,532.31
  6. Step 6: Final answer
    x = 81,739.21

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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.