Home / 90,190.64-124,512.78-67,521.48

Finding the Fourth Proportional to 90,190.64, 124,512.78 and 67,521.48

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Solution

The fourth proportional to 90,190.64, 124,512.78 and 67,521.48 is: 93,216.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,190.64 : 124,512.78 = 67,521.48 : x
  2. Step 2: Convert to fraction form
    90,190.64/124,512.78 = 67,521.48/x
  3. Step 3: Cross multiply
    90,190.64x = 124,512.78 × 67,521.48
  4. Step 4: Simplify right side
    90,190.64x = 8,407,287,184.51
  5. Step 5: Solve for x
    x = 8,407,287,184.51/90,190.64
  6. Step 6: Final answer
    x = 93,216.85

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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.