Home / 140,051.12-193,286.88-79,630.81

Finding the Fourth Proportional to 140,051.12, 193,286.88 and 79,630.81

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Solution

The fourth proportional to 140,051.12, 193,286.88 and 79,630.81 is: 109,899.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,051.12 : 193,286.88 = 79,630.81 : x
  2. Step 2: Convert to fraction form
    140,051.12/193,286.88 = 79,630.81/x
  3. Step 3: Cross multiply
    140,051.12x = 193,286.88 × 79,630.81
  4. Step 4: Simplify right side
    140,051.12x = 15,391,590,816.77
  5. Step 5: Solve for x
    x = 15,391,590,816.77/140,051.12
  6. Step 6: Final answer
    x = 109,899.81

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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.