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Finding the Fourth Proportional to 141,812.70, 212,459.85 and 115,374.30

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Solution

The fourth proportional to 141,812.70, 212,459.85 and 115,374.30 is: 172,850.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,812.70 : 212,459.85 = 115,374.30 : x
  2. Step 2: Convert to fraction form
    141,812.70/212,459.85 = 115,374.30/x
  3. Step 3: Cross multiply
    141,812.70x = 212,459.85 × 115,374.30
  4. Step 4: Simplify right side
    141,812.70x = 24,512,406,471.86
  5. Step 5: Solve for x
    x = 24,512,406,471.86/141,812.70
  6. Step 6: Final answer
    x = 172,850.57

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1.5x scale

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.