Home / 112,370.20-155,071.40-61,383.64

Finding the Fourth Proportional to 112,370.20, 155,071.40 and 61,383.64

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Solution

The fourth proportional to 112,370.20, 155,071.40 and 61,383.64 is: 84,709.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,370.20 : 155,071.40 = 61,383.64 : x
  2. Step 2: Convert to fraction form
    112,370.20/155,071.40 = 61,383.64/x
  3. Step 3: Cross multiply
    112,370.20x = 155,071.40 × 61,383.64
  4. Step 4: Simplify right side
    112,370.20x = 9,518,846,991.90
  5. Step 5: Solve for x
    x = 9,518,846,991.90/112,370.20
  6. Step 6: Final answer
    x = 84,709.71

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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.