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Finding the Fourth Proportional to 161,158.78, 241,715.85 and 42,839.74

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Solution

The fourth proportional to 161,158.78, 241,715.85 and 42,839.74 is: 64,253.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,158.78 : 241,715.85 = 42,839.74 : x
  2. Step 2: Convert to fraction form
    161,158.78/241,715.85 = 42,839.74/x
  3. Step 3: Cross multiply
    161,158.78x = 241,715.85 × 42,839.74
  4. Step 4: Simplify right side
    161,158.78x = 10,355,044,167.88
  5. Step 5: Solve for x
    x = 10,355,044,167.88/161,158.78
  6. Step 6: Final answer
    x = 64,253.68

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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.