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Finding the Fourth Proportional to 121,295.60, 181,943.40 and 113,422.40

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Solution

The fourth proportional to 121,295.60, 181,943.40 and 113,422.40 is: 170,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,295.60 : 181,943.40 = 113,422.40 : x
  2. Step 2: Convert to fraction form
    121,295.60/181,943.40 = 113,422.40/x
  3. Step 3: Cross multiply
    121,295.60x = 181,943.40 × 113,422.40
  4. Step 4: Simplify right side
    121,295.60x = 20,636,457,092.16
  5. Step 5: Solve for x
    x = 20,636,457,092.16/121,295.60
  6. Step 6: Final answer
    x = 170,133.60

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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.