Home / 121,284.30-181,926.45-68,140.20

Finding the Fourth Proportional to 121,284.30, 181,926.45 and 68,140.20

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Solution

The fourth proportional to 121,284.30, 181,926.45 and 68,140.20 is: 102,210.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,284.30 : 181,926.45 = 68,140.20 : x
  2. Step 2: Convert to fraction form
    121,284.30/181,926.45 = 68,140.20/x
  3. Step 3: Cross multiply
    121,284.30x = 181,926.45 × 68,140.20
  4. Step 4: Simplify right side
    121,284.30x = 12,396,504,688.29
  5. Step 5: Solve for x
    x = 12,396,504,688.29/121,284.30
  6. Step 6: Final answer
    x = 102,210.30

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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.