Home / 138,844.77-191,619.93-100,114.46

Finding the Fourth Proportional to 138,844.77, 191,619.93 and 100,114.46

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Solution

The fourth proportional to 138,844.77, 191,619.93 and 100,114.46 is: 138,168.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,844.77 : 191,619.93 = 100,114.46 : x
  2. Step 2: Convert to fraction form
    138,844.77/191,619.93 = 100,114.46/x
  3. Step 3: Cross multiply
    138,844.77x = 191,619.93 × 100,114.46
  4. Step 4: Simplify right side
    138,844.77x = 19,183,925,109.37
  5. Step 5: Solve for x
    x = 19,183,925,109.37/138,844.77
  6. Step 6: Final answer
    x = 138,168.15

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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.