Home / 99,621.40-149,723.70-97,871.80

Finding the Fourth Proportional to 99,621.40, 149,723.70 and 97,871.80

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Solution

The fourth proportional to 99,621.40, 149,723.70 and 97,871.80 is: 147,094.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,621.40 : 149,723.70 = 97,871.80 : x
  2. Step 2: Convert to fraction form
    99,621.40/149,723.70 = 97,871.80/x
  3. Step 3: Cross multiply
    99,621.40x = 149,723.70 × 97,871.80
  4. Step 4: Simplify right side
    99,621.40x = 14,653,728,021.66
  5. Step 5: Solve for x
    x = 14,653,728,021.66/99,621.40
  6. Step 6: Final answer
    x = 147,094.18

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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.