Home / 155,946.41-215,205.78-87,963.17

Finding the Fourth Proportional to 155,946.41, 215,205.78 and 87,963.17

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Solution

The fourth proportional to 155,946.41, 215,205.78 and 87,963.17 is: 121,389.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,946.41 : 215,205.78 = 87,963.17 : x
  2. Step 2: Convert to fraction form
    155,946.41/215,205.78 = 87,963.17/x
  3. Step 3: Cross multiply
    155,946.41x = 215,205.78 × 87,963.17
  4. Step 4: Simplify right side
    155,946.41x = 18,930,182,268.47
  5. Step 5: Solve for x
    x = 18,930,182,268.47/155,946.41
  6. Step 6: Final answer
    x = 121,389.03

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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.