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Finding the Fourth Proportional to 141,396, 212,094 and 42,900

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Solution

The fourth proportional to 141,396, 212,094 and 42,900 is: 64,350

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,396 : 212,094 = 42,900 : x
  2. Step 2: Convert to fraction form
    141,396/212,094 = 42,900/x
  3. Step 3: Cross multiply
    141,396x = 212,094 × 42,900
  4. Step 4: Simplify right side
    141,396x = 9,098,832,600
  5. Step 5: Solve for x
    x = 9,098,832,600/141,396
  6. Step 6: Final answer
    x = 64,350

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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.