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Finding the Fourth Proportional to 121,852.58, 182,822.11 and 54,378.46

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Solution

The fourth proportional to 121,852.58, 182,822.11 and 54,378.46 is: 81,587.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,852.58 : 182,822.11 = 54,378.46 : x
  2. Step 2: Convert to fraction form
    121,852.58/182,822.11 = 54,378.46/x
  3. Step 3: Cross multiply
    121,852.58x = 182,822.11 × 54,378.46
  4. Step 4: Simplify right side
    121,852.58x = 9,941,585,708.40
  5. Step 5: Solve for x
    x = 9,941,585,708.40/121,852.58
  6. Step 6: Final answer
    x = 81,587.00

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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.