Home / 138,722.77-191,366.90-84,260.45

Finding the Fourth Proportional to 138,722.77, 191,366.90 and 84,260.45

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Solution

The fourth proportional to 138,722.77, 191,366.90 and 84,260.45 is: 116,236.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,722.77 : 191,366.90 = 84,260.45 : x
  2. Step 2: Convert to fraction form
    138,722.77/191,366.90 = 84,260.45/x
  3. Step 3: Cross multiply
    138,722.77x = 191,366.90 × 84,260.45
  4. Step 4: Simplify right side
    138,722.77x = 16,124,659,730.97
  5. Step 5: Solve for x
    x = 16,124,659,730.97/138,722.77
  6. Step 6: Final answer
    x = 116,236.58

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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.