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Finding the Fourth Proportional to 113,139.40, 169,757.70 and 57,735.40

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Solution

The fourth proportional to 113,139.40, 169,757.70 and 57,735.40 is: 86,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,139.40 : 169,757.70 = 57,735.40 : x
  2. Step 2: Convert to fraction form
    113,139.40/169,757.70 = 57,735.40/x
  3. Step 3: Cross multiply
    113,139.40x = 169,757.70 × 57,735.40
  4. Step 4: Simplify right side
    113,139.40x = 9,801,028,712.58
  5. Step 5: Solve for x
    x = 9,801,028,712.58/113,139.40
  6. Step 6: Final answer
    x = 86,627.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.