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Finding the Fourth Proportional to 121,308.80, 181,968.60 and 41,345.60

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Solution

The fourth proportional to 121,308.80, 181,968.60 and 41,345.60 is: 62,020.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,308.80 : 181,968.60 = 41,345.60 : x
  2. Step 2: Convert to fraction form
    121,308.80/181,968.60 = 41,345.60/x
  3. Step 3: Cross multiply
    121,308.80x = 181,968.60 × 41,345.60
  4. Step 4: Simplify right side
    121,308.80x = 7,523,600,948.16
  5. Step 5: Solve for x
    x = 7,523,600,948.16/121,308.80
  6. Step 6: Final answer
    x = 62,020.24

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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.