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Finding the Fourth Proportional to 112,530.40, 168,680.40 and 65,759.20

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Solution

The fourth proportional to 112,530.40, 168,680.40 and 65,759.20 is: 98,571.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,530.40 : 168,680.40 = 65,759.20 : x
  2. Step 2: Convert to fraction form
    112,530.40/168,680.40 = 65,759.20/x
  3. Step 3: Cross multiply
    112,530.40x = 168,680.40 × 65,759.20
  4. Step 4: Simplify right side
    112,530.40x = 11,092,288,159.68
  5. Step 5: Solve for x
    x = 11,092,288,159.68/112,530.40
  6. Step 6: Final answer
    x = 98,571.48

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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.