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Finding the Fourth Proportional to 141,750.66, 212,700.12 and 91,817.82

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Solution

The fourth proportional to 141,750.66, 212,700.12 and 91,817.82 is: 137,774.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,750.66 : 212,700.12 = 91,817.82 : x
  2. Step 2: Convert to fraction form
    141,750.66/212,700.12 = 91,817.82/x
  3. Step 3: Cross multiply
    141,750.66x = 212,700.12 × 91,817.82
  4. Step 4: Simplify right side
    141,750.66x = 19,529,661,332.14
  5. Step 5: Solve for x
    x = 19,529,661,332.14/141,750.66
  6. Step 6: Final answer
    x = 137,774.75

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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.