Home / 141,913.80-212,629.81-85,635.66

Finding the Fourth Proportional to 141,913.80, 212,629.81 and 85,635.66

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Solution

The fourth proportional to 141,913.80, 212,629.81 and 85,635.66 is: 128,308.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,913.80 : 212,629.81 = 85,635.66 : x
  2. Step 2: Convert to fraction form
    141,913.80/212,629.81 = 85,635.66/x
  3. Step 3: Cross multiply
    141,913.80x = 212,629.81 × 85,635.66
  4. Step 4: Simplify right side
    141,913.80x = 18,208,694,115.02
  5. Step 5: Solve for x
    x = 18,208,694,115.02/141,913.80
  6. Step 6: Final answer
    x = 128,308.13

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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.