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Finding the Fourth Proportional to 121,125, 181,693.98 and 38,025.48

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Solution

The fourth proportional to 121,125, 181,693.98 and 38,025.48 is: 57,040.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,125 : 181,693.98 = 38,025.48 : x
  2. Step 2: Convert to fraction form
    121,125/181,693.98 = 38,025.48/x
  3. Step 3: Cross multiply
    121,125x = 181,693.98 × 38,025.48
  4. Step 4: Simplify right side
    121,125x = 6,909,000,802.61
  5. Step 5: Solve for x
    x = 6,909,000,802.61/121,125
  6. Step 6: Final answer
    x = 57,040.25

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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.