Home / 153,105.10-211,216.85-89,414.80

Finding the Fourth Proportional to 153,105.10, 211,216.85 and 89,414.80

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Solution

The fourth proportional to 153,105.10, 211,216.85 and 89,414.80 is: 123,352.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,105.10 : 211,216.85 = 89,414.80 : x
  2. Step 2: Convert to fraction form
    153,105.10/211,216.85 = 89,414.80/x
  3. Step 3: Cross multiply
    153,105.10x = 211,216.85 × 89,414.80
  4. Step 4: Simplify right side
    153,105.10x = 18,885,911,759.57
  5. Step 5: Solve for x
    x = 18,885,911,759.57/153,105.10
  6. Step 6: Final answer
    x = 123,352.60

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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.