Home / 154,199.88-212,823.06-89,689.08

Finding the Fourth Proportional to 154,199.88, 212,823.06 and 89,689.08

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Solution

The fourth proportional to 154,199.88, 212,823.06 and 89,689.08 is: 123,786.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,199.88 : 212,823.06 = 89,689.08 : x
  2. Step 2: Convert to fraction form
    154,199.88/212,823.06 = 89,689.08/x
  3. Step 3: Cross multiply
    154,199.88x = 212,823.06 × 89,689.08
  4. Step 4: Simplify right side
    154,199.88x = 19,087,904,454.18
  5. Step 5: Solve for x
    x = 19,087,904,454.18/154,199.88
  6. Step 6: Final answer
    x = 123,786.77

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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.