Home / 99,448.28-149,172.48-68,188.76

Finding the Fourth Proportional to 99,448.28, 149,172.48 and 68,188.76

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Solution

The fourth proportional to 99,448.28, 149,172.48 and 68,188.76 is: 102,283.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,448.28 : 149,172.48 = 68,188.76 : x
  2. Step 2: Convert to fraction form
    99,448.28/149,172.48 = 68,188.76/x
  3. Step 3: Cross multiply
    99,448.28x = 149,172.48 × 68,188.76
  4. Step 4: Simplify right side
    99,448.28x = 10,171,886,437.32
  5. Step 5: Solve for x
    x = 10,171,886,437.32/99,448.28
  6. Step 6: Final answer
    x = 102,283.18

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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.