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Finding the Fourth Proportional to 121,498.30, 181,919.40 and 121,498.30

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Solution

The fourth proportional to 121,498.30, 181,919.40 and 121,498.30 is: 181,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,498.30 : 181,919.40 = 121,498.30 : x
  2. Step 2: Convert to fraction form
    121,498.30/181,919.40 = 121,498.30/x
  3. Step 3: Cross multiply
    121,498.30x = 181,919.40 × 121,498.30
  4. Step 4: Simplify right side
    121,498.30x = 22,102,897,837.02
  5. Step 5: Solve for x
    x = 22,102,897,837.02/121,498.30
  6. Step 6: Final answer
    x = 181,919.40

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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.