Home / 120,800.13-181,125.77-40,830.56

Finding the Fourth Proportional to 120,800.13, 181,125.77 and 40,830.56

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Solution

The fourth proportional to 120,800.13, 181,125.77 and 40,830.56 is: 61,220.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,800.13 : 181,125.77 = 40,830.56 : x
  2. Step 2: Convert to fraction form
    120,800.13/181,125.77 = 40,830.56/x
  3. Step 3: Cross multiply
    120,800.13x = 181,125.77 × 40,830.56
  4. Step 4: Simplify right side
    120,800.13x = 7,395,465,909.23
  5. Step 5: Solve for x
    x = 7,395,465,909.23/120,800.13
  6. Step 6: Final answer
    x = 61,220.68

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1.5x scale

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.