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Finding the Fourth Proportional to 121,587.40, 182,162.40 and 104,091.40

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Solution

The fourth proportional to 121,587.40, 182,162.40 and 104,091.40 is: 155,949.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,587.40 : 182,162.40 = 104,091.40 : x
  2. Step 2: Convert to fraction form
    121,587.40/182,162.40 = 104,091.40/x
  3. Step 3: Cross multiply
    121,587.40x = 182,162.40 × 104,091.40
  4. Step 4: Simplify right side
    121,587.40x = 18,961,539,243.36
  5. Step 5: Solve for x
    x = 18,961,539,243.36/121,587.40
  6. Step 6: Final answer
    x = 155,949.87

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1.5x scale

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.