Home / 154,208.96-212,805.60-87,139.52

Finding the Fourth Proportional to 154,208.96, 212,805.60 and 87,139.52

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Solution

The fourth proportional to 154,208.96, 212,805.60 and 87,139.52 is: 120,250.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,208.96 : 212,805.60 = 87,139.52 : x
  2. Step 2: Convert to fraction form
    154,208.96/212,805.60 = 87,139.52/x
  3. Step 3: Cross multiply
    154,208.96x = 212,805.60 × 87,139.52
  4. Step 4: Simplify right side
    154,208.96x = 18,543,777,837.31
  5. Step 5: Solve for x
    x = 18,543,777,837.31/154,208.96
  6. Step 6: Final answer
    x = 120,250.98

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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.