Home / 121,821.28-182,746.56-42,919.20

Finding the Fourth Proportional to 121,821.28, 182,746.56 and 42,919.20

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Solution

The fourth proportional to 121,821.28, 182,746.56 and 42,919.20 is: 64,383.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,821.28 : 182,746.56 = 42,919.20 : x
  2. Step 2: Convert to fraction form
    121,821.28/182,746.56 = 42,919.20/x
  3. Step 3: Cross multiply
    121,821.28x = 182,746.56 × 42,919.20
  4. Step 4: Simplify right side
    121,821.28x = 7,843,336,157.95
  5. Step 5: Solve for x
    x = 7,843,336,157.95/121,821.28
  6. Step 6: Final answer
    x = 64,383.96

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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.