Home / 90,435.24-134,799.80-83,706.56

Finding the Fourth Proportional to 90,435.24, 134,799.80 and 83,706.56

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Solution

The fourth proportional to 90,435.24, 134,799.80 and 83,706.56 is: 124,770.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,435.24 : 134,799.80 = 83,706.56 : x
  2. Step 2: Convert to fraction form
    90,435.24/134,799.80 = 83,706.56/x
  3. Step 3: Cross multiply
    90,435.24x = 134,799.80 × 83,706.56
  4. Step 4: Simplify right side
    90,435.24x = 11,283,627,546.69
  5. Step 5: Solve for x
    x = 11,283,627,546.69/90,435.24
  6. Step 6: Final answer
    x = 124,770.25

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.