Home / 98,427.40-147,818.92-90,515.32

Finding the Fourth Proportional to 98,427.40, 147,818.92 and 90,515.32

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Solution

The fourth proportional to 98,427.40, 147,818.92 and 90,515.32 is: 135,936.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,427.40 : 147,818.92 = 90,515.32 : x
  2. Step 2: Convert to fraction form
    98,427.40/147,818.92 = 90,515.32/x
  3. Step 3: Cross multiply
    98,427.40x = 147,818.92 × 90,515.32
  4. Step 4: Simplify right side
    98,427.40x = 13,379,876,845.85
  5. Step 5: Solve for x
    x = 13,379,876,845.85/98,427.40
  6. Step 6: Final answer
    x = 135,936.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.