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Finding the Fourth Proportional to 121,027.60, 181,541.40 and 115,584.40

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Solution

The fourth proportional to 121,027.60, 181,541.40 and 115,584.40 is: 173,376.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,027.60 : 181,541.40 = 115,584.40 : x
  2. Step 2: Convert to fraction form
    121,027.60/181,541.40 = 115,584.40/x
  3. Step 3: Cross multiply
    121,027.60x = 181,541.40 × 115,584.40
  4. Step 4: Simplify right side
    121,027.60x = 20,983,353,794.16
  5. Step 5: Solve for x
    x = 20,983,353,794.16/121,027.60
  6. Step 6: Final answer
    x = 173,376.60

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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.