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Finding the Fourth Proportional to 118,086.40, 176,870.40 and 115,494.40

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Solution

The fourth proportional to 118,086.40, 176,870.40 and 115,494.40 is: 172,988.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,086.40 : 176,870.40 = 115,494.40 : x
  2. Step 2: Convert to fraction form
    118,086.40/176,870.40 = 115,494.40/x
  3. Step 3: Cross multiply
    118,086.40x = 176,870.40 × 115,494.40
  4. Step 4: Simplify right side
    118,086.40x = 20,427,540,725.76
  5. Step 5: Solve for x
    x = 20,427,540,725.76/118,086.40
  6. Step 6: Final answer
    x = 172,988.09

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1.5x scale

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.