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Finding the Fourth Proportional to 139,712.66, 209,583.99 and 59,758.94

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Solution

The fourth proportional to 139,712.66, 209,583.99 and 59,758.94 is: 89,644.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,712.66 : 209,583.99 = 59,758.94 : x
  2. Step 2: Convert to fraction form
    139,712.66/209,583.99 = 59,758.94/x
  3. Step 3: Cross multiply
    139,712.66x = 209,583.99 × 59,758.94
  4. Step 4: Simplify right side
    139,712.66x = 12,524,516,035.45
  5. Step 5: Solve for x
    x = 12,524,516,035.45/139,712.66
  6. Step 6: Final answer
    x = 89,644.82

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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.