Home / 115,915.66-160,781.96-112,842.92

Finding the Fourth Proportional to 115,915.66, 160,781.96 and 112,842.92

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Solution

The fourth proportional to 115,915.66, 160,781.96 and 112,842.92 is: 156,519.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,915.66 : 160,781.96 = 112,842.92 : x
  2. Step 2: Convert to fraction form
    115,915.66/160,781.96 = 112,842.92/x
  3. Step 3: Cross multiply
    115,915.66x = 160,781.96 × 112,842.92
  4. Step 4: Simplify right side
    115,915.66x = 18,143,106,533.79
  5. Step 5: Solve for x
    x = 18,143,106,533.79/115,915.66
  6. Step 6: Final answer
    x = 156,519.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.