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Finding the Fourth Proportional to 107,937.60, 161,906.40 and 61,281.60

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Solution

The fourth proportional to 107,937.60, 161,906.40 and 61,281.60 is: 91,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,937.60 : 161,906.40 = 61,281.60 : x
  2. Step 2: Convert to fraction form
    107,937.60/161,906.40 = 61,281.60/x
  3. Step 3: Cross multiply
    107,937.60x = 161,906.40 × 61,281.60
  4. Step 4: Simplify right side
    107,937.60x = 9,921,883,242.24
  5. Step 5: Solve for x
    x = 9,921,883,242.24/107,937.60
  6. Step 6: Final answer
    x = 91,922.40

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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.