Home / 118,129.28-163,012.20-67,135.20

Finding the Fourth Proportional to 118,129.28, 163,012.20 and 67,135.20

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Solution

The fourth proportional to 118,129.28, 163,012.20 and 67,135.20 is: 92,643.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,129.28 : 163,012.20 = 67,135.20 : x
  2. Step 2: Convert to fraction form
    118,129.28/163,012.20 = 67,135.20/x
  3. Step 3: Cross multiply
    118,129.28x = 163,012.20 × 67,135.20
  4. Step 4: Simplify right side
    118,129.28x = 10,943,856,649.44
  5. Step 5: Solve for x
    x = 10,943,856,649.44/118,129.28
  6. Step 6: Final answer
    x = 92,643.05

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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.