Home / 140,133.49-193,390.52-78,900.77

Finding the Fourth Proportional to 140,133.49, 193,390.52 and 78,900.77

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Solution

The fourth proportional to 140,133.49, 193,390.52 and 78,900.77 is: 108,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,133.49 : 193,390.52 = 78,900.77 : x
  2. Step 2: Convert to fraction form
    140,133.49/193,390.52 = 78,900.77/x
  3. Step 3: Cross multiply
    140,133.49x = 193,390.52 × 78,900.77
  4. Step 4: Simplify right side
    140,133.49x = 15,258,660,286.88
  5. Step 5: Solve for x
    x = 15,258,660,286.88/140,133.49
  6. Step 6: Final answer
    x = 108,886.60

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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.