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Finding the Fourth Proportional to 121,695.48, 182,355.07 and 94,978.12

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Solution

The fourth proportional to 121,695.48, 182,355.07 and 94,978.12 is: 142,320.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,695.48 : 182,355.07 = 94,978.12 : x
  2. Step 2: Convert to fraction form
    121,695.48/182,355.07 = 94,978.12/x
  3. Step 3: Cross multiply
    121,695.48x = 182,355.07 × 94,978.12
  4. Step 4: Simplify right side
    121,695.48x = 17,319,741,721.07
  5. Step 5: Solve for x
    x = 17,319,741,721.07/121,695.48
  6. Step 6: Final answer
    x = 142,320.34

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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.