Home / 199,429.60-275,163.02-121,885.42

Finding the Fourth Proportional to 199,429.60, 275,163.02 and 121,885.42

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Solution

The fourth proportional to 199,429.60, 275,163.02 and 121,885.42 is: 168,171.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,429.60 : 275,163.02 = 121,885.42 : x
  2. Step 2: Convert to fraction form
    199,429.60/275,163.02 = 121,885.42/x
  3. Step 3: Cross multiply
    199,429.60x = 275,163.02 × 121,885.42
  4. Step 4: Simplify right side
    199,429.60x = 33,538,360,261.17
  5. Step 5: Solve for x
    x = 33,538,360,261.17/199,429.60
  6. Step 6: Final answer
    x = 168,171.43

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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.