Home / 112,849.60-168,928.80-65,963.20

Finding the Fourth Proportional to 112,849.60, 168,928.80 and 65,963.20

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Solution

The fourth proportional to 112,849.60, 168,928.80 and 65,963.20 is: 98,742.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,849.60 : 168,928.80 = 65,963.20 : x
  2. Step 2: Convert to fraction form
    112,849.60/168,928.80 = 65,963.20/x
  3. Step 3: Cross multiply
    112,849.60x = 168,928.80 × 65,963.20
  4. Step 4: Simplify right side
    112,849.60x = 11,143,084,220.16
  5. Step 5: Solve for x
    x = 11,143,084,220.16/112,849.60
  6. Step 6: Final answer
    x = 98,742.79

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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.