Home / 71,120.76-98,156.07-68,784.18

Finding the Fourth Proportional to 71,120.76, 98,156.07 and 68,784.18

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Solution

The fourth proportional to 71,120.76, 98,156.07 and 68,784.18 is: 94,931.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,120.76 : 98,156.07 = 68,784.18 : x
  2. Step 2: Convert to fraction form
    71,120.76/98,156.07 = 68,784.18/x
  3. Step 3: Cross multiply
    71,120.76x = 98,156.07 × 68,784.18
  4. Step 4: Simplify right side
    71,120.76x = 6,751,584,786.97
  5. Step 5: Solve for x
    x = 6,751,584,786.97/71,120.76
  6. Step 6: Final answer
    x = 94,931.28

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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.