Home / 109,621.60-164,432.40-43,039.60

Finding the Fourth Proportional to 109,621.60, 164,432.40 and 43,039.60

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Solution

The fourth proportional to 109,621.60, 164,432.40 and 43,039.60 is: 64,559.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,621.60 : 164,432.40 = 43,039.60 : x
  2. Step 2: Convert to fraction form
    109,621.60/164,432.40 = 43,039.60/x
  3. Step 3: Cross multiply
    109,621.60x = 164,432.40 × 43,039.60
  4. Step 4: Simplify right side
    109,621.60x = 7,077,104,723.04
  5. Step 5: Solve for x
    x = 7,077,104,723.04/109,621.60
  6. Step 6: Final answer
    x = 64,559.40

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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.