Home / 121,212.60-181,851.30-108,155.40

Finding the Fourth Proportional to 121,212.60, 181,851.30 and 108,155.40

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Solution

The fourth proportional to 121,212.60, 181,851.30 and 108,155.40 is: 162,262.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,212.60 : 181,851.30 = 108,155.40 : x
  2. Step 2: Convert to fraction form
    121,212.60/181,851.30 = 108,155.40/x
  3. Step 3: Cross multiply
    121,212.60x = 181,851.30 × 108,155.40
  4. Step 4: Simplify right side
    121,212.60x = 19,668,200,092.02
  5. Step 5: Solve for x
    x = 19,668,200,092.02/121,212.60
  6. Step 6: Final answer
    x = 162,262.01

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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.