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Finding the Fourth Proportional to 121,316.80, 181,980.60 and 41,353.60

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Solution

The fourth proportional to 121,316.80, 181,980.60 and 41,353.60 is: 62,032.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,316.80 : 181,980.60 = 41,353.60 : x
  2. Step 2: Convert to fraction form
    121,316.80/181,980.60 = 41,353.60/x
  3. Step 3: Cross multiply
    121,316.80x = 181,980.60 × 41,353.60
  4. Step 4: Simplify right side
    121,316.80x = 7,525,552,940.16
  5. Step 5: Solve for x
    x = 7,525,552,940.16/121,316.80
  6. Step 6: Final answer
    x = 62,032.24

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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.