Home / 115,709.20-173,621.40-65,827.60

Finding the Fourth Proportional to 115,709.20, 173,621.40 and 65,827.60

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Solution

The fourth proportional to 115,709.20, 173,621.40 and 65,827.60 is: 98,774.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,709.20 : 173,621.40 = 65,827.60 : x
  2. Step 2: Convert to fraction form
    115,709.20/173,621.40 = 65,827.60/x
  3. Step 3: Cross multiply
    115,709.20x = 173,621.40 × 65,827.60
  4. Step 4: Simplify right side
    115,709.20x = 11,429,080,070.64
  5. Step 5: Solve for x
    x = 11,429,080,070.64/115,709.20
  6. Step 6: Final answer
    x = 98,774.17

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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.