Home / 109,785.20-151,483.64-61,388.01

Finding the Fourth Proportional to 109,785.20, 151,483.64 and 61,388.01

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Solution

The fourth proportional to 109,785.20, 151,483.64 and 61,388.01 is: 84,704.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,785.20 : 151,483.64 = 61,388.01 : x
  2. Step 2: Convert to fraction form
    109,785.20/151,483.64 = 61,388.01/x
  3. Step 3: Cross multiply
    109,785.20x = 151,483.64 × 61,388.01
  4. Step 4: Simplify right side
    109,785.20x = 9,299,278,900.22
  5. Step 5: Solve for x
    x = 9,299,278,900.22/109,785.20
  6. Step 6: Final answer
    x = 84,704.31

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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.