Home / 99,814.40-149,570.10-73,178.12

Finding the Fourth Proportional to 99,814.40, 149,570.10 and 73,178.12

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Solution

The fourth proportional to 99,814.40, 149,570.10 and 73,178.12 is: 109,656.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,814.40 : 149,570.10 = 73,178.12 : x
  2. Step 2: Convert to fraction form
    99,814.40/149,570.10 = 73,178.12/x
  3. Step 3: Cross multiply
    99,814.40x = 149,570.10 × 73,178.12
  4. Step 4: Simplify right side
    99,814.40x = 10,945,258,539.25
  5. Step 5: Solve for x
    x = 10,945,258,539.25/99,814.40
  6. Step 6: Final answer
    x = 109,656.11

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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.