Home / 128,781.51-193,171.32-40,034.85

Finding the Fourth Proportional to 128,781.51, 193,171.32 and 40,034.85

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Solution

The fourth proportional to 128,781.51, 193,171.32 and 40,034.85 is: 60,051.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,781.51 : 193,171.32 = 40,034.85 : x
  2. Step 2: Convert to fraction form
    128,781.51/193,171.32 = 40,034.85/x
  3. Step 3: Cross multiply
    128,781.51x = 193,171.32 × 40,034.85
  4. Step 4: Simplify right side
    128,781.51x = 7,733,584,820.50
  5. Step 5: Solve for x
    x = 7,733,584,820.50/128,781.51
  6. Step 6: Final answer
    x = 60,051.98

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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.