Home / 124,899.76-172,355.34-77,157.28

Finding the Fourth Proportional to 124,899.76, 172,355.34 and 77,157.28

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Solution

The fourth proportional to 124,899.76, 172,355.34 and 77,157.28 is: 106,473.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,899.76 : 172,355.34 = 77,157.28 : x
  2. Step 2: Convert to fraction form
    124,899.76/172,355.34 = 77,157.28/x
  3. Step 3: Cross multiply
    124,899.76x = 172,355.34 × 77,157.28
  4. Step 4: Simplify right side
    124,899.76x = 13,298,469,227.88
  5. Step 5: Solve for x
    x = 13,298,469,227.88/124,899.76
  6. Step 6: Final answer
    x = 106,473.14

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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.