Home / 128,205.59-191,508.90-94,990.53

Finding the Fourth Proportional to 128,205.59, 191,508.90 and 94,990.53

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Solution

The fourth proportional to 128,205.59, 191,508.90 and 94,990.53 is: 141,893.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,205.59 : 191,508.90 = 94,990.53 : x
  2. Step 2: Convert to fraction form
    128,205.59/191,508.90 = 94,990.53/x
  3. Step 3: Cross multiply
    128,205.59x = 191,508.90 × 94,990.53
  4. Step 4: Simplify right side
    128,205.59x = 18,191,531,311.30
  5. Step 5: Solve for x
    x = 18,191,531,311.30/128,205.59
  6. Step 6: Final answer
    x = 141,893.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.