Home / 89,722.20-134,729.10-64,936.20

Finding the Fourth Proportional to 89,722.20, 134,729.10 and 64,936.20

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Solution

The fourth proportional to 89,722.20, 134,729.10 and 64,936.20 is: 97,509.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,722.20 : 134,729.10 = 64,936.20 : x
  2. Step 2: Convert to fraction form
    89,722.20/134,729.10 = 64,936.20/x
  3. Step 3: Cross multiply
    89,722.20x = 134,729.10 × 64,936.20
  4. Step 4: Simplify right side
    89,722.20x = 8,748,795,783.42
  5. Step 5: Solve for x
    x = 8,748,795,783.42/89,722.20
  6. Step 6: Final answer
    x = 97,509.82

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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.