Home / 168,411.60-232,328.82-100,389.84

Finding the Fourth Proportional to 168,411.60, 232,328.82 and 100,389.84

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Solution

The fourth proportional to 168,411.60, 232,328.82 and 100,389.84 is: 138,490.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,411.60 : 232,328.82 = 100,389.84 : x
  2. Step 2: Convert to fraction form
    168,411.60/232,328.82 = 100,389.84/x
  3. Step 3: Cross multiply
    168,411.60x = 232,328.82 × 100,389.84
  4. Step 4: Simplify right side
    168,411.60x = 23,323,453,067.19
  5. Step 5: Solve for x
    x = 23,323,453,067.19/168,411.60
  6. Step 6: Final answer
    x = 138,490.78

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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.