Home / 107,921.20-161,881.80-104,292.40

Finding the Fourth Proportional to 107,921.20, 161,881.80 and 104,292.40

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Solution

The fourth proportional to 107,921.20, 161,881.80 and 104,292.40 is: 156,438.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,921.20 : 161,881.80 = 104,292.40 : x
  2. Step 2: Convert to fraction form
    107,921.20/161,881.80 = 104,292.40/x
  3. Step 3: Cross multiply
    107,921.20x = 161,881.80 × 104,292.40
  4. Step 4: Simplify right side
    107,921.20x = 16,883,041,438.32
  5. Step 5: Solve for x
    x = 16,883,041,438.32/107,921.20
  6. Step 6: Final answer
    x = 156,438.60

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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.