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Finding the Fourth Proportional to 121,649.58, 182,454.54 and 42,745.38

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Solution

The fourth proportional to 121,649.58, 182,454.54 and 42,745.38 is: 64,111.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,649.58 : 182,454.54 = 42,745.38 : x
  2. Step 2: Convert to fraction form
    121,649.58/182,454.54 = 42,745.38/x
  3. Step 3: Cross multiply
    121,649.58x = 182,454.54 × 42,745.38
  4. Step 4: Simplify right side
    121,649.58x = 7,799,088,645.03
  5. Step 5: Solve for x
    x = 7,799,088,645.03/121,649.58
  6. Step 6: Final answer
    x = 64,111.10

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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.