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Finding the Fourth Proportional to 97,358.60, 145,713.90 and 70,628.60

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Solution

The fourth proportional to 97,358.60, 145,713.90 and 70,628.60 is: 105,707.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,358.60 : 145,713.90 = 70,628.60 : x
  2. Step 2: Convert to fraction form
    97,358.60/145,713.90 = 70,628.60/x
  3. Step 3: Cross multiply
    97,358.60x = 145,713.90 × 70,628.60
  4. Step 4: Simplify right side
    97,358.60x = 10,291,568,757.54
  5. Step 5: Solve for x
    x = 10,291,568,757.54/97,358.60
  6. Step 6: Final answer
    x = 105,707.85

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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.