Home / 97,821.20-146,731.80-91,989.20

Finding the Fourth Proportional to 97,821.20, 146,731.80 and 91,989.20

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Solution

The fourth proportional to 97,821.20, 146,731.80 and 91,989.20 is: 137,983.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,821.20 : 146,731.80 = 91,989.20 : x
  2. Step 2: Convert to fraction form
    97,821.20/146,731.80 = 91,989.20/x
  3. Step 3: Cross multiply
    97,821.20x = 146,731.80 × 91,989.20
  4. Step 4: Simplify right side
    97,821.20x = 13,497,740,896.56
  5. Step 5: Solve for x
    x = 13,497,740,896.56/97,821.20
  6. Step 6: Final answer
    x = 137,983.80

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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.