Home / 121,539.20-182,308.80-115,707.20

Finding the Fourth Proportional to 121,539.20, 182,308.80 and 115,707.20

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Solution

The fourth proportional to 121,539.20, 182,308.80 and 115,707.20 is: 173,560.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,539.20 : 182,308.80 = 115,707.20 : x
  2. Step 2: Convert to fraction form
    121,539.20/182,308.80 = 115,707.20/x
  3. Step 3: Cross multiply
    121,539.20x = 182,308.80 × 115,707.20
  4. Step 4: Simplify right side
    121,539.20x = 21,094,440,783.36
  5. Step 5: Solve for x
    x = 21,094,440,783.36/121,539.20
  6. Step 6: Final answer
    x = 173,560.80

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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.