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Finding the Fourth Proportional to 121,010.60, 181,515.90 and 65,023.40

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Solution

The fourth proportional to 121,010.60, 181,515.90 and 65,023.40 is: 97,535.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.60 : 181,515.90 = 65,023.40 : x
  2. Step 2: Convert to fraction form
    121,010.60/181,515.90 = 65,023.40/x
  3. Step 3: Cross multiply
    121,010.60x = 181,515.90 × 65,023.40
  4. Step 4: Simplify right side
    121,010.60x = 11,802,780,972.06
  5. Step 5: Solve for x
    x = 11,802,780,972.06/121,010.60
  6. Step 6: Final answer
    x = 97,535.10

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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.