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Finding the Fourth Proportional to 112,392.53, 155,112.41 and 61,413

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Solution

The fourth proportional to 112,392.53, 155,112.41 and 61,413 is: 84,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,392.53 : 155,112.41 = 61,413 : x
  2. Step 2: Convert to fraction form
    112,392.53/155,112.41 = 61,413/x
  3. Step 3: Cross multiply
    112,392.53x = 155,112.41 × 61,413
  4. Step 4: Simplify right side
    112,392.53x = 9,525,918,435.33
  5. Step 5: Solve for x
    x = 9,525,918,435.33/112,392.53
  6. Step 6: Final answer
    x = 84,755.80

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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.