Home / 99,764.16-149,276.64-79,982.88

Finding the Fourth Proportional to 99,764.16, 149,276.64 and 79,982.88

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Solution

The fourth proportional to 99,764.16, 149,276.64 and 79,982.88 is: 119,678.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,764.16 : 149,276.64 = 79,982.88 : x
  2. Step 2: Convert to fraction form
    99,764.16/149,276.64 = 79,982.88/x
  3. Step 3: Cross multiply
    99,764.16x = 149,276.64 × 79,982.88
  4. Step 4: Simplify right side
    99,764.16x = 11,939,575,583.92
  5. Step 5: Solve for x
    x = 11,939,575,583.92/99,764.16
  6. Step 6: Final answer
    x = 119,678.00

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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.