Home / 113,427.60-170,141.40-77,998.20

Finding the Fourth Proportional to 113,427.60, 170,141.40 and 77,998.20

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Solution

The fourth proportional to 113,427.60, 170,141.40 and 77,998.20 is: 116,997.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,427.60 : 170,141.40 = 77,998.20 : x
  2. Step 2: Convert to fraction form
    113,427.60/170,141.40 = 77,998.20/x
  3. Step 3: Cross multiply
    113,427.60x = 170,141.40 × 77,998.20
  4. Step 4: Simplify right side
    113,427.60x = 13,270,722,945.48
  5. Step 5: Solve for x
    x = 13,270,722,945.48/113,427.60
  6. Step 6: Final answer
    x = 116,997.30

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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.