Home / 126,815.90-190,293.88-70,687.62

Finding the Fourth Proportional to 126,815.90, 190,293.88 and 70,687.62

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Solution

The fourth proportional to 126,815.90, 190,293.88 and 70,687.62 is: 106,070.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,815.90 : 190,293.88 = 70,687.62 : x
  2. Step 2: Convert to fraction form
    126,815.90/190,293.88 = 70,687.62/x
  3. Step 3: Cross multiply
    126,815.90x = 190,293.88 × 70,687.62
  4. Step 4: Simplify right side
    126,815.90x = 13,451,421,477.77
  5. Step 5: Solve for x
    x = 13,451,421,477.77/126,815.90
  6. Step 6: Final answer
    x = 106,070.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.