Home / 138,719.46-191,431.83-75,056.34

Finding the Fourth Proportional to 138,719.46, 191,431.83 and 75,056.34

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Solution

The fourth proportional to 138,719.46, 191,431.83 and 75,056.34 is: 103,577.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,719.46 : 191,431.83 = 75,056.34 : x
  2. Step 2: Convert to fraction form
    138,719.46/191,431.83 = 75,056.34/x
  3. Step 3: Cross multiply
    138,719.46x = 191,431.83 × 75,056.34
  4. Step 4: Simplify right side
    138,719.46x = 14,368,172,519.30
  5. Step 5: Solve for x
    x = 14,368,172,519.30/138,719.46
  6. Step 6: Final answer
    x = 103,577.19

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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.