Home / 109,619.40-164,234.70-89,790.60

Finding the Fourth Proportional to 109,619.40, 164,234.70 and 89,790.60

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Solution

The fourth proportional to 109,619.40, 164,234.70 and 89,790.60 is: 134,526.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,619.40 : 164,234.70 = 89,790.60 : x
  2. Step 2: Convert to fraction form
    109,619.40/164,234.70 = 89,790.60/x
  3. Step 3: Cross multiply
    109,619.40x = 164,234.70 × 89,790.60
  4. Step 4: Simplify right side
    109,619.40x = 14,746,732,253.82
  5. Step 5: Solve for x
    x = 14,746,732,253.82/109,619.40
  6. Step 6: Final answer
    x = 134,526.66

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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.