Home / 154,150.58-212,754.87-89,639.78

Finding the Fourth Proportional to 154,150.58, 212,754.87 and 89,639.78

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Solution

The fourth proportional to 154,150.58, 212,754.87 and 89,639.78 is: 123,718.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,150.58 : 212,754.87 = 89,639.78 : x
  2. Step 2: Convert to fraction form
    154,150.58/212,754.87 = 89,639.78/x
  3. Step 3: Cross multiply
    154,150.58x = 212,754.87 × 89,639.78
  4. Step 4: Simplify right side
    154,150.58x = 19,071,298,676.95
  5. Step 5: Solve for x
    x = 19,071,298,676.95/154,150.58
  6. Step 6: Final answer
    x = 123,718.63

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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.