Home / 142,814.57-212,945.04-138,891.05

Finding the Fourth Proportional to 142,814.57, 212,945.04 and 138,891.05

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Solution

The fourth proportional to 142,814.57, 212,945.04 and 138,891.05 is: 207,094.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,814.57 : 212,945.04 = 138,891.05 : x
  2. Step 2: Convert to fraction form
    142,814.57/212,945.04 = 138,891.05/x
  3. Step 3: Cross multiply
    142,814.57x = 212,945.04 × 138,891.05
  4. Step 4: Simplify right side
    142,814.57x = 29,576,159,503.44
  5. Step 5: Solve for x
    x = 29,576,159,503.44/142,814.57
  6. Step 6: Final answer
    x = 207,094.83

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.