Home / 97,760.16-146,628.72-76,989.60

Finding the Fourth Proportional to 97,760.16, 146,628.72 and 76,989.60

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Solution

The fourth proportional to 97,760.16, 146,628.72 and 76,989.60 is: 115,475.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,760.16 : 146,628.72 = 76,989.60 : x
  2. Step 2: Convert to fraction form
    97,760.16/146,628.72 = 76,989.60/x
  3. Step 3: Cross multiply
    97,760.16x = 146,628.72 × 76,989.60
  4. Step 4: Simplify right side
    97,760.16x = 11,288,886,501.31
  5. Step 5: Solve for x
    x = 11,288,886,501.31/97,760.16
  6. Step 6: Final answer
    x = 115,475.33

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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.