Home / 153,808.12-212,260.26-89,272.36

Finding the Fourth Proportional to 153,808.12, 212,260.26 and 89,272.36

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Solution

The fourth proportional to 153,808.12, 212,260.26 and 89,272.36 is: 123,198.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,808.12 : 212,260.26 = 89,272.36 : x
  2. Step 2: Convert to fraction form
    153,808.12/212,260.26 = 89,272.36/x
  3. Step 3: Cross multiply
    153,808.12x = 212,260.26 × 89,272.36
  4. Step 4: Simplify right side
    153,808.12x = 18,948,974,344.41
  5. Step 5: Solve for x
    x = 18,948,974,344.41/153,808.12
  6. Step 6: Final answer
    x = 123,198.79

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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.