Home / 112,566.96-155,255.85-78,564.60

Finding the Fourth Proportional to 112,566.96, 155,255.85 and 78,564.60

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Solution

The fourth proportional to 112,566.96, 155,255.85 and 78,564.60 is: 108,358.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,566.96 : 155,255.85 = 78,564.60 : x
  2. Step 2: Convert to fraction form
    112,566.96/155,255.85 = 78,564.60/x
  3. Step 3: Cross multiply
    112,566.96x = 155,255.85 × 78,564.60
  4. Step 4: Simplify right side
    112,566.96x = 12,197,613,752.91
  5. Step 5: Solve for x
    x = 12,197,613,752.91/112,566.96
  6. Step 6: Final answer
    x = 108,358.74

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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.