Home / 101,729.90-140,374.35-55,777.45

Finding the Fourth Proportional to 101,729.90, 140,374.35 and 55,777.45

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Solution

The fourth proportional to 101,729.90, 140,374.35 and 55,777.45 is: 76,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,729.90 : 140,374.35 = 55,777.45 : x
  2. Step 2: Convert to fraction form
    101,729.90/140,374.35 = 55,777.45/x
  3. Step 3: Cross multiply
    101,729.90x = 140,374.35 × 55,777.45
  4. Step 4: Simplify right side
    101,729.90x = 7,829,722,586.54
  5. Step 5: Solve for x
    x = 7,829,722,586.54/101,729.90
  6. Step 6: Final answer
    x = 76,965.80

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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.