Home / 89,650.12-134,704.68-67,670.50

Finding the Fourth Proportional to 89,650.12, 134,704.68 and 67,670.50

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Solution

The fourth proportional to 89,650.12, 134,704.68 and 67,670.50 is: 101,678.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,650.12 : 134,704.68 = 67,670.50 : x
  2. Step 2: Convert to fraction form
    89,650.12/134,704.68 = 67,670.50/x
  3. Step 3: Cross multiply
    89,650.12x = 134,704.68 × 67,670.50
  4. Step 4: Simplify right side
    89,650.12x = 9,115,533,047.94
  5. Step 5: Solve for x
    x = 9,115,533,047.94/89,650.12
  6. Step 6: Final answer
    x = 101,678.98

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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.