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Finding the Fourth Proportional to 121,144.87, 181,746.60 and 38,038.87

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Solution

The fourth proportional to 121,144.87, 181,746.60 and 38,038.87 is: 57,067.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,144.87 : 181,746.60 = 38,038.87 : x
  2. Step 2: Convert to fraction form
    121,144.87/181,746.60 = 38,038.87/x
  3. Step 3: Cross multiply
    121,144.87x = 181,746.60 × 38,038.87
  4. Step 4: Simplify right side
    121,144.87x = 6,913,435,290.34
  5. Step 5: Solve for x
    x = 6,913,435,290.34/121,144.87
  6. Step 6: Final answer
    x = 57,067.50

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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.