Home / 81,146.30-121,719.45-46,154.30

Finding the Fourth Proportional to 81,146.30, 121,719.45 and 46,154.30

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Solution

The fourth proportional to 81,146.30, 121,719.45 and 46,154.30 is: 69,231.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,146.30 : 121,719.45 = 46,154.30 : x
  2. Step 2: Convert to fraction form
    81,146.30/121,719.45 = 46,154.30/x
  3. Step 3: Cross multiply
    81,146.30x = 121,719.45 × 46,154.30
  4. Step 4: Simplify right side
    81,146.30x = 5,617,876,011.14
  5. Step 5: Solve for x
    x = 5,617,876,011.14/81,146.30
  6. Step 6: Final answer
    x = 69,231.45

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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.