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Finding the Fourth Proportional to 141,398.81, 212,042.86 and 52,603.88

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Solution

The fourth proportional to 141,398.81, 212,042.86 and 52,603.88 is: 78,885.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,398.81 : 212,042.86 = 52,603.88 : x
  2. Step 2: Convert to fraction form
    141,398.81/212,042.86 = 52,603.88/x
  3. Step 3: Cross multiply
    141,398.81x = 212,042.86 × 52,603.88
  4. Step 4: Simplify right side
    141,398.81x = 11,154,277,459.21
  5. Step 5: Solve for x
    x = 11,154,277,459.21/141,398.81
  6. Step 6: Final answer
    x = 78,885.23

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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.