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Finding the Fourth Proportional to 132,603.95, 198,924.25 and 42,649.21

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Solution

The fourth proportional to 132,603.95, 198,924.25 and 42,649.21 is: 63,979.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,603.95 : 198,924.25 = 42,649.21 : x
  2. Step 2: Convert to fraction form
    132,603.95/198,924.25 = 42,649.21/x
  3. Step 3: Cross multiply
    132,603.95x = 198,924.25 × 42,649.21
  4. Step 4: Simplify right side
    132,603.95x = 8,483,961,117.72
  5. Step 5: Solve for x
    x = 8,483,961,117.72/132,603.95
  6. Step 6: Final answer
    x = 63,979.70

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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.