Home / 140,080.40-193,303.44-79,642.76

Finding the Fourth Proportional to 140,080.40, 193,303.44 and 79,642.76

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Solution

The fourth proportional to 140,080.40, 193,303.44 and 79,642.76 is: 109,902.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,080.40 : 193,303.44 = 79,642.76 : x
  2. Step 2: Convert to fraction form
    140,080.40/193,303.44 = 79,642.76/x
  3. Step 3: Cross multiply
    140,080.40x = 193,303.44 × 79,642.76
  4. Step 4: Simplify right side
    140,080.40x = 15,395,219,479.09
  5. Step 5: Solve for x
    x = 15,395,219,479.09/140,080.40
  6. Step 6: Final answer
    x = 109,902.74

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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.