Home / 128,867.34-193,142.37-61,434.90

Finding the Fourth Proportional to 128,867.34, 193,142.37 and 61,434.90

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Solution

The fourth proportional to 128,867.34, 193,142.37 and 61,434.90 is: 92,076.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,867.34 : 193,142.37 = 61,434.90 : x
  2. Step 2: Convert to fraction form
    128,867.34/193,142.37 = 61,434.90/x
  3. Step 3: Cross multiply
    128,867.34x = 193,142.37 × 61,434.90
  4. Step 4: Simplify right side
    128,867.34x = 11,865,682,186.71
  5. Step 5: Solve for x
    x = 11,865,682,186.71/128,867.34
  6. Step 6: Final answer
    x = 92,076.72

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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.