Home / 138,451.68-191,077.92-84,772.80

Finding the Fourth Proportional to 138,451.68, 191,077.92 and 84,772.80

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Solution

The fourth proportional to 138,451.68, 191,077.92 and 84,772.80 is: 116,995.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,451.68 : 191,077.92 = 84,772.80 : x
  2. Step 2: Convert to fraction form
    138,451.68/191,077.92 = 84,772.80/x
  3. Step 3: Cross multiply
    138,451.68x = 191,077.92 × 84,772.80
  4. Step 4: Simplify right side
    138,451.68x = 16,198,210,296.58
  5. Step 5: Solve for x
    x = 16,198,210,296.58/138,451.68
  6. Step 6: Final answer
    x = 116,995.40

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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.