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Finding the Fourth Proportional to 141,925.67, 212,647.51 and 85,647.52

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Solution

The fourth proportional to 141,925.67, 212,647.51 and 85,647.52 is: 128,325.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,925.67 : 212,647.51 = 85,647.52 : x
  2. Step 2: Convert to fraction form
    141,925.67/212,647.51 = 85,647.52/x
  3. Step 3: Cross multiply
    141,925.67x = 212,647.51 × 85,647.52
  4. Step 4: Simplify right side
    141,925.67x = 18,212,732,797.85
  5. Step 5: Solve for x
    x = 18,212,732,797.85/141,925.67
  6. Step 6: Final answer
    x = 128,325.85

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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.