Home / 141,869.20-212,428.36-85,634.14

Finding the Fourth Proportional to 141,869.20, 212,428.36 and 85,634.14

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Solution

The fourth proportional to 141,869.20, 212,428.36 and 85,634.14 is: 128,224.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,869.20 : 212,428.36 = 85,634.14 : x
  2. Step 2: Convert to fraction form
    141,869.20/212,428.36 = 85,634.14/x
  3. Step 3: Cross multiply
    141,869.20x = 212,428.36 × 85,634.14
  4. Step 4: Simplify right side
    141,869.20x = 18,191,119,496.18
  5. Step 5: Solve for x
    x = 18,191,119,496.18/141,869.20
  6. Step 6: Final answer
    x = 128,224.59

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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.