Home / 113,122.76-155,980.03-72,231.33

Finding the Fourth Proportional to 113,122.76, 155,980.03 and 72,231.33

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Solution

The fourth proportional to 113,122.76, 155,980.03 and 72,231.33 is: 99,596.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,122.76 : 155,980.03 = 72,231.33 : x
  2. Step 2: Convert to fraction form
    113,122.76/155,980.03 = 72,231.33/x
  3. Step 3: Cross multiply
    113,122.76x = 155,980.03 × 72,231.33
  4. Step 4: Simplify right side
    113,122.76x = 11,266,644,659.18
  5. Step 5: Solve for x
    x = 11,266,644,659.18/113,122.76
  6. Step 6: Final answer
    x = 99,596.62

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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.