Home / 221,870.16-306,181.08-121,268.16

Finding the Fourth Proportional to 221,870.16, 306,181.08 and 121,268.16

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Solution

The fourth proportional to 221,870.16, 306,181.08 and 121,268.16 is: 167,350.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,870.16 : 306,181.08 = 121,268.16 : x
  2. Step 2: Convert to fraction form
    221,870.16/306,181.08 = 121,268.16/x
  3. Step 3: Cross multiply
    221,870.16x = 306,181.08 × 121,268.16
  4. Step 4: Simplify right side
    221,870.16x = 37,130,016,198.41
  5. Step 5: Solve for x
    x = 37,130,016,198.41/221,870.16
  6. Step 6: Final answer
    x = 167,350.20

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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.