Home / 125,073.81-172,600.14-68,485.20

Finding the Fourth Proportional to 125,073.81, 172,600.14 and 68,485.20

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Solution

The fourth proportional to 125,073.81, 172,600.14 and 68,485.20 is: 94,508.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,073.81 : 172,600.14 = 68,485.20 : x
  2. Step 2: Convert to fraction form
    125,073.81/172,600.14 = 68,485.20/x
  3. Step 3: Cross multiply
    125,073.81x = 172,600.14 × 68,485.20
  4. Step 4: Simplify right side
    125,073.81x = 11,820,555,107.93
  5. Step 5: Solve for x
    x = 11,820,555,107.93/125,073.81
  6. Step 6: Final answer
    x = 94,508.64

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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.