Home / 138,720.32-191,434.15-96,303.45

Finding the Fourth Proportional to 138,720.32, 191,434.15 and 96,303.45

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Solution

The fourth proportional to 138,720.32, 191,434.15 and 96,303.45 is: 132,898.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,720.32 : 191,434.15 = 96,303.45 : x
  2. Step 2: Convert to fraction form
    138,720.32/191,434.15 = 96,303.45/x
  3. Step 3: Cross multiply
    138,720.32x = 191,434.15 × 96,303.45
  4. Step 4: Simplify right side
    138,720.32x = 18,435,769,092.82
  5. Step 5: Solve for x
    x = 18,435,769,092.82/138,720.32
  6. Step 6: Final answer
    x = 132,898.84

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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.