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Finding the Fourth Proportional to 126,486.64, 174,530.52 and 75,520

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Solution

The fourth proportional to 126,486.64, 174,530.52 and 75,520 is: 104,205.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,486.64 : 174,530.52 = 75,520 : x
  2. Step 2: Convert to fraction form
    126,486.64/174,530.52 = 75,520/x
  3. Step 3: Cross multiply
    126,486.64x = 174,530.52 × 75,520
  4. Step 4: Simplify right side
    126,486.64x = 13,180,544,870.40
  5. Step 5: Solve for x
    x = 13,180,544,870.40/126,486.64
  6. Step 6: Final answer
    x = 104,205.04

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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.