Home / 147,515.60-221,345.40-68,589.20

Finding the Fourth Proportional to 147,515.60, 221,345.40 and 68,589.20

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Solution

The fourth proportional to 147,515.60, 221,345.40 and 68,589.20 is: 102,917.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,515.60 : 221,345.40 = 68,589.20 : x
  2. Step 2: Convert to fraction form
    147,515.60/221,345.40 = 68,589.20/x
  3. Step 3: Cross multiply
    147,515.60x = 221,345.40 × 68,589.20
  4. Step 4: Simplify right side
    147,515.60x = 15,181,903,909.68
  5. Step 5: Solve for x
    x = 15,181,903,909.68/147,515.60
  6. Step 6: Final answer
    x = 102,917.28

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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.