Home / 141,869.39-212,428.64-85,634.33

Finding the Fourth Proportional to 141,869.39, 212,428.64 and 85,634.33

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Solution

The fourth proportional to 141,869.39, 212,428.64 and 85,634.33 is: 128,224.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,869.39 : 212,428.64 = 85,634.33 : x
  2. Step 2: Convert to fraction form
    141,869.39/212,428.64 = 85,634.33/x
  3. Step 3: Cross multiply
    141,869.39x = 212,428.64 × 85,634.33
  4. Step 4: Simplify right side
    141,869.39x = 18,191,183,411.15
  5. Step 5: Solve for x
    x = 18,191,183,411.15/141,869.39
  6. Step 6: Final answer
    x = 128,224.87

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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.