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Finding the Fourth Proportional to 118,106.01, 162,986.79 and 75,689.15

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Solution

The fourth proportional to 118,106.01, 162,986.79 and 75,689.15 is: 104,451.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,106.01 : 162,986.79 = 75,689.15 : x
  2. Step 2: Convert to fraction form
    118,106.01/162,986.79 = 75,689.15/x
  3. Step 3: Cross multiply
    118,106.01x = 162,986.79 × 75,689.15
  4. Step 4: Simplify right side
    118,106.01x = 12,336,330,781.39
  5. Step 5: Solve for x
    x = 12,336,330,781.39/118,106.01
  6. Step 6: Final answer
    x = 104,451.34

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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.