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Finding the Fourth Proportional to 119,437.67, 164,819.00 and 64,990.05

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Solution

The fourth proportional to 119,437.67, 164,819.00 and 64,990.05 is: 89,683.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,437.67 : 164,819.00 = 64,990.05 : x
  2. Step 2: Convert to fraction form
    119,437.67/164,819.00 = 64,990.05/x
  3. Step 3: Cross multiply
    119,437.67x = 164,819.00 × 64,990.05
  4. Step 4: Simplify right side
    119,437.67x = 10,711,593,901.90
  5. Step 5: Solve for x
    x = 10,711,593,901.90/119,437.67
  6. Step 6: Final answer
    x = 89,683.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.