Home / 136,698.43-188,643.56-76,265.47

Finding the Fourth Proportional to 136,698.43, 188,643.56 and 76,265.47

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Solution

The fourth proportional to 136,698.43, 188,643.56 and 76,265.47 is: 105,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,698.43 : 188,643.56 = 76,265.47 : x
  2. Step 2: Convert to fraction form
    136,698.43/188,643.56 = 76,265.47/x
  3. Step 3: Cross multiply
    136,698.43x = 188,643.56 × 76,265.47
  4. Step 4: Simplify right side
    136,698.43x = 14,386,989,765.87
  5. Step 5: Solve for x
    x = 14,386,989,765.87/136,698.43
  6. Step 6: Final answer
    x = 105,246.20

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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.