Home / 112,465.91-155,252.91-85,609.55

Finding the Fourth Proportional to 112,465.91, 155,252.91 and 85,609.55

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Solution

The fourth proportional to 112,465.91, 155,252.91 and 85,609.55 is: 118,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,465.91 : 155,252.91 = 85,609.55 : x
  2. Step 2: Convert to fraction form
    112,465.91/155,252.91 = 85,609.55/x
  3. Step 3: Cross multiply
    112,465.91x = 155,252.91 × 85,609.55
  4. Step 4: Simplify right side
    112,465.91x = 13,291,131,761.29
  5. Step 5: Solve for x
    x = 13,291,131,761.29/112,465.91
  6. Step 6: Final answer
    x = 118,179.20

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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.