Home / 185,701.28-256,267.08-100,817.72

Finding the Fourth Proportional to 185,701.28, 256,267.08 and 100,817.72

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Solution

The fourth proportional to 185,701.28, 256,267.08 and 100,817.72 is: 139,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,701.28 : 256,267.08 = 100,817.72 : x
  2. Step 2: Convert to fraction form
    185,701.28/256,267.08 = 100,817.72/x
  3. Step 3: Cross multiply
    185,701.28x = 256,267.08 × 100,817.72
  4. Step 4: Simplify right side
    185,701.28x = 25,836,262,716.66
  5. Step 5: Solve for x
    x = 25,836,262,716.66/185,701.28
  6. Step 6: Final answer
    x = 139,128.08

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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.