Home / 142,777.75-197,033.22-85,419.50

Finding the Fourth Proportional to 142,777.75, 197,033.22 and 85,419.50

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Solution

The fourth proportional to 142,777.75, 197,033.22 and 85,419.50 is: 117,878.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,777.75 : 197,033.22 = 85,419.50 : x
  2. Step 2: Convert to fraction form
    142,777.75/197,033.22 = 85,419.50/x
  3. Step 3: Cross multiply
    142,777.75x = 197,033.22 × 85,419.50
  4. Step 4: Simplify right side
    142,777.75x = 16,830,479,135.79
  5. Step 5: Solve for x
    x = 16,830,479,135.79/142,777.75
  6. Step 6: Final answer
    x = 117,878.87

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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.