Home / 126,686.42-174,830.46-76,388.66

Finding the Fourth Proportional to 126,686.42, 174,830.46 and 76,388.66

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Solution

The fourth proportional to 126,686.42, 174,830.46 and 76,388.66 is: 105,418.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,686.42 : 174,830.46 = 76,388.66 : x
  2. Step 2: Convert to fraction form
    126,686.42/174,830.46 = 76,388.66/x
  3. Step 3: Cross multiply
    126,686.42x = 174,830.46 × 76,388.66
  4. Step 4: Simplify right side
    126,686.42x = 13,355,064,566.58
  5. Step 5: Solve for x
    x = 13,355,064,566.58/126,686.42
  6. Step 6: Final answer
    x = 105,418.28

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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.