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Finding the Fourth Proportional to 121,143.87, 181,745.10 and 38,037.87

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Solution

The fourth proportional to 121,143.87, 181,745.10 and 38,037.87 is: 57,066.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,143.87 : 181,745.10 = 38,037.87 : x
  2. Step 2: Convert to fraction form
    121,143.87/181,745.10 = 38,037.87/x
  3. Step 3: Cross multiply
    121,143.87x = 181,745.10 × 38,037.87
  4. Step 4: Simplify right side
    121,143.87x = 6,913,196,486.94
  5. Step 5: Solve for x
    x = 6,913,196,486.94/121,143.87
  6. Step 6: Final answer
    x = 57,066.00

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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.