Home / 104,338.98-156,158.55-85,618.26

Finding the Fourth Proportional to 104,338.98, 156,158.55 and 85,618.26

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Solution

The fourth proportional to 104,338.98, 156,158.55 and 85,618.26 is: 128,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,338.98 : 156,158.55 = 85,618.26 : x
  2. Step 2: Convert to fraction form
    104,338.98/156,158.55 = 85,618.26/x
  3. Step 3: Cross multiply
    104,338.98x = 156,158.55 × 85,618.26
  4. Step 4: Simplify right side
    104,338.98x = 13,370,023,335.12
  5. Step 5: Solve for x
    x = 13,370,023,335.12/104,338.98
  6. Step 6: Final answer
    x = 128,140.25

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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.