Home / 154,272.57-212,893.33-87,204.57

Finding the Fourth Proportional to 154,272.57, 212,893.33 and 87,204.57

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Solution

The fourth proportional to 154,272.57, 212,893.33 and 87,204.57 is: 120,340.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,272.57 : 212,893.33 = 87,204.57 : x
  2. Step 2: Convert to fraction form
    154,272.57/212,893.33 = 87,204.57/x
  3. Step 3: Cross multiply
    154,272.57x = 212,893.33 × 87,204.57
  4. Step 4: Simplify right side
    154,272.57x = 18,565,271,298.52
  5. Step 5: Solve for x
    x = 18,565,271,298.52/154,272.57
  6. Step 6: Final answer
    x = 120,340.71

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.