Home / 140,119.77-193,369.55-79,699.11

Finding the Fourth Proportional to 140,119.77, 193,369.55 and 79,699.11

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Solution

The fourth proportional to 140,119.77, 193,369.55 and 79,699.11 is: 109,987.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,119.77 : 193,369.55 = 79,699.11 : x
  2. Step 2: Convert to fraction form
    140,119.77/193,369.55 = 79,699.11/x
  3. Step 3: Cross multiply
    140,119.77x = 193,369.55 × 79,699.11
  4. Step 4: Simplify right side
    140,119.77x = 15,411,379,912.47
  5. Step 5: Solve for x
    x = 15,411,379,912.47/140,119.77
  6. Step 6: Final answer
    x = 109,987.19

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1.5x scale

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.