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Finding the Fourth Proportional to 118,145.75, 162,948.98 and 75,708.23

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Solution

The fourth proportional to 118,145.75, 162,948.98 and 75,708.23 is: 104,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,145.75 : 162,948.98 = 75,708.23 : x
  2. Step 2: Convert to fraction form
    118,145.75/162,948.98 = 75,708.23/x
  3. Step 3: Cross multiply
    118,145.75x = 162,948.98 × 75,708.23
  4. Step 4: Simplify right side
    118,145.75x = 12,336,578,230.63
  5. Step 5: Solve for x
    x = 12,336,578,230.63/118,145.75
  6. Step 6: Final answer
    x = 104,418.30

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1.5x scale

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.