Home / 109,210.30-163,815.45-42,652.60

Finding the Fourth Proportional to 109,210.30, 163,815.45 and 42,652.60

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Solution

The fourth proportional to 109,210.30, 163,815.45 and 42,652.60 is: 63,978.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,210.30 : 163,815.45 = 42,652.60 : x
  2. Step 2: Convert to fraction form
    109,210.30/163,815.45 = 42,652.60/x
  3. Step 3: Cross multiply
    109,210.30x = 163,815.45 × 42,652.60
  4. Step 4: Simplify right side
    109,210.30x = 6,987,154,862.67
  5. Step 5: Solve for x
    x = 6,987,154,862.67/109,210.30
  6. Step 6: Final answer
    x = 63,978.90

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Similar ratio
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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.