Home / 103,619.60-155,544.60-64,221.20

Finding the Fourth Proportional to 103,619.60, 155,544.60 and 64,221.20

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Solution

The fourth proportional to 103,619.60, 155,544.60 and 64,221.20 is: 96,403.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,619.60 : 155,544.60 = 64,221.20 : x
  2. Step 2: Convert to fraction form
    103,619.60/155,544.60 = 64,221.20/x
  3. Step 3: Cross multiply
    103,619.60x = 155,544.60 × 64,221.20
  4. Step 4: Simplify right side
    103,619.60x = 9,989,260,865.52
  5. Step 5: Solve for x
    x = 9,989,260,865.52/103,619.60
  6. Step 6: Final answer
    x = 96,403.20

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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.