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Finding the Fourth Proportional to 116,860.40, 175,031.40 and 90,479.60

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Solution

The fourth proportional to 116,860.40, 175,031.40 and 90,479.60 is: 135,518.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,860.40 : 175,031.40 = 90,479.60 : x
  2. Step 2: Convert to fraction form
    116,860.40/175,031.40 = 90,479.60/x
  3. Step 3: Cross multiply
    116,860.40x = 175,031.40 × 90,479.60
  4. Step 4: Simplify right side
    116,860.40x = 15,836,771,059.44
  5. Step 5: Solve for x
    x = 15,836,771,059.44/116,860.40
  6. Step 6: Final answer
    x = 135,518.71

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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.