Home / 127,089.63-175,388.36-76,778.91

Finding the Fourth Proportional to 127,089.63, 175,388.36 and 76,778.91

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Solution

The fourth proportional to 127,089.63, 175,388.36 and 76,778.91 is: 105,957.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,089.63 : 175,388.36 = 76,778.91 : x
  2. Step 2: Convert to fraction form
    127,089.63/175,388.36 = 76,778.91/x
  3. Step 3: Cross multiply
    127,089.63x = 175,388.36 × 76,778.91
  4. Step 4: Simplify right side
    127,089.63x = 13,466,126,723.59
  5. Step 5: Solve for x
    x = 13,466,126,723.59/127,089.63
  6. Step 6: Final answer
    x = 105,957.71

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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.