Home / 123,800.15-171,718.25-120,518.87

Finding the Fourth Proportional to 123,800.15, 171,718.25 and 120,518.87

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Solution

The fourth proportional to 123,800.15, 171,718.25 and 120,518.87 is: 167,166.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,800.15 : 171,718.25 = 120,518.87 : x
  2. Step 2: Convert to fraction form
    123,800.15/171,718.25 = 120,518.87/x
  3. Step 3: Cross multiply
    123,800.15x = 171,718.25 × 120,518.87
  4. Step 4: Simplify right side
    123,800.15x = 20,695,287,987.19
  5. Step 5: Solve for x
    x = 20,695,287,987.19/123,800.15
  6. Step 6: Final answer
    x = 167,166.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.