Home / 118,122.30-163,002.78-64,406.88

Finding the Fourth Proportional to 118,122.30, 163,002.78 and 64,406.88

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Solution

The fourth proportional to 118,122.30, 163,002.78 and 64,406.88 is: 88,878.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,122.30 : 163,002.78 = 64,406.88 : x
  2. Step 2: Convert to fraction form
    118,122.30/163,002.78 = 64,406.88/x
  3. Step 3: Cross multiply
    118,122.30x = 163,002.78 × 64,406.88
  4. Step 4: Simplify right side
    118,122.30x = 10,498,500,491.13
  5. Step 5: Solve for x
    x = 10,498,500,491.13/118,122.30
  6. Step 6: Final answer
    x = 88,878.23

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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.