Home / 112,135.74-168,203.61-76,968.78

Finding the Fourth Proportional to 112,135.74, 168,203.61 and 76,968.78

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Solution

The fourth proportional to 112,135.74, 168,203.61 and 76,968.78 is: 115,453.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,135.74 : 168,203.61 = 76,968.78 : x
  2. Step 2: Convert to fraction form
    112,135.74/168,203.61 = 76,968.78/x
  3. Step 3: Cross multiply
    112,135.74x = 168,203.61 × 76,968.78
  4. Step 4: Simplify right side
    112,135.74x = 12,946,426,653.30
  5. Step 5: Solve for x
    x = 12,946,426,653.30/112,135.74
  6. Step 6: Final answer
    x = 115,453.17

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1.5x scale

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.