Home / 141,988.18-212,919.95-53,179.38

Finding the Fourth Proportional to 141,988.18, 212,919.95 and 53,179.38

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Solution

The fourth proportional to 141,988.18, 212,919.95 and 53,179.38 is: 79,745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,988.18 : 212,919.95 = 53,179.38 : x
  2. Step 2: Convert to fraction form
    141,988.18/212,919.95 = 53,179.38/x
  3. Step 3: Cross multiply
    141,988.18x = 212,919.95 × 53,179.38
  4. Step 4: Simplify right side
    141,988.18x = 11,322,949,600.13
  5. Step 5: Solve for x
    x = 11,322,949,600.13/141,988.18
  6. Step 6: Final answer
    x = 79,745.72

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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.