Home / 109,899.20-164,848.80-65,612.45

Finding the Fourth Proportional to 109,899.20, 164,848.80 and 65,612.45

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Solution

The fourth proportional to 109,899.20, 164,848.80 and 65,612.45 is: 98,418.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,899.20 : 164,848.80 = 65,612.45 : x
  2. Step 2: Convert to fraction form
    109,899.20/164,848.80 = 65,612.45/x
  3. Step 3: Cross multiply
    109,899.20x = 164,848.80 × 65,612.45
  4. Step 4: Simplify right side
    109,899.20x = 10,816,133,647.56
  5. Step 5: Solve for x
    x = 10,816,133,647.56/109,899.20
  6. Step 6: Final answer
    x = 98,418.68

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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.