Home / 138,325.73-190,977.80-112,892.85

Finding the Fourth Proportional to 138,325.73, 190,977.80 and 112,892.85

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Solution

The fourth proportional to 138,325.73, 190,977.80 and 112,892.85 is: 155,864.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,325.73 : 190,977.80 = 112,892.85 : x
  2. Step 2: Convert to fraction form
    138,325.73/190,977.80 = 112,892.85/x
  3. Step 3: Cross multiply
    138,325.73x = 190,977.80 × 112,892.85
  4. Step 4: Simplify right side
    138,325.73x = 21,560,028,128.73
  5. Step 5: Solve for x
    x = 21,560,028,128.73/138,325.73
  6. Step 6: Final answer
    x = 155,864.19

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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.