Home / 112,786.24-155,638.86-61,789.60

Finding the Fourth Proportional to 112,786.24, 155,638.86 and 61,789.60

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Solution

The fourth proportional to 112,786.24, 155,638.86 and 61,789.60 is: 85,266.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,786.24 : 155,638.86 = 61,789.60 : x
  2. Step 2: Convert to fraction form
    112,786.24/155,638.86 = 61,789.60/x
  3. Step 3: Cross multiply
    112,786.24x = 155,638.86 × 61,789.60
  4. Step 4: Simplify right side
    112,786.24x = 9,616,862,903.86
  5. Step 5: Solve for x
    x = 9,616,862,903.86/112,786.24
  6. Step 6: Final answer
    x = 85,266.28

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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.