Home / 98,621.28-147,948-54,268.80

Finding the Fourth Proportional to 98,621.28, 147,948 and 54,268.80

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Solution

The fourth proportional to 98,621.28, 147,948 and 54,268.80 is: 81,412.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,621.28 : 147,948 = 54,268.80 : x
  2. Step 2: Convert to fraction form
    98,621.28/147,948 = 54,268.80/x
  3. Step 3: Cross multiply
    98,621.28x = 147,948 × 54,268.80
  4. Step 4: Simplify right side
    98,621.28x = 8,028,960,422.40
  5. Step 5: Solve for x
    x = 8,028,960,422.40/98,621.28
  6. Step 6: Final answer
    x = 81,412.05

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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.