Home / 113,106.15-155,999.97-76,835.58

Finding the Fourth Proportional to 113,106.15, 155,999.97 and 76,835.58

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Solution

The fourth proportional to 113,106.15, 155,999.97 and 76,835.58 is: 105,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,106.15 : 155,999.97 = 76,835.58 : x
  2. Step 2: Convert to fraction form
    113,106.15/155,999.97 = 76,835.58/x
  3. Step 3: Cross multiply
    113,106.15x = 155,999.97 × 76,835.58
  4. Step 4: Simplify right side
    113,106.15x = 11,986,348,174.93
  5. Step 5: Solve for x
    x = 11,986,348,174.93/113,106.15
  6. Step 6: Final answer
    x = 105,974.33

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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.