Home / 128,104.69-176,786.22-70,747.88

Finding the Fourth Proportional to 128,104.69, 176,786.22 and 70,747.88

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Solution

The fourth proportional to 128,104.69, 176,786.22 and 70,747.88 is: 97,633.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,104.69 : 176,786.22 = 70,747.88 : x
  2. Step 2: Convert to fraction form
    128,104.69/176,786.22 = 70,747.88/x
  3. Step 3: Cross multiply
    128,104.69x = 176,786.22 × 70,747.88
  4. Step 4: Simplify right side
    128,104.69x = 12,507,250,455.03
  5. Step 5: Solve for x
    x = 12,507,250,455.03/128,104.69
  6. Step 6: Final answer
    x = 97,633.04

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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.