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Finding the Fourth Proportional to 139,572.25, 209,368.39 and 58,437.63

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Solution

The fourth proportional to 139,572.25, 209,368.39 and 58,437.63 is: 87,660.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,572.25 : 209,368.39 = 58,437.63 : x
  2. Step 2: Convert to fraction form
    139,572.25/209,368.39 = 58,437.63/x
  3. Step 3: Cross multiply
    139,572.25x = 209,368.39 × 58,437.63
  4. Step 4: Simplify right side
    139,572.25x = 12,234,992,471.99
  5. Step 5: Solve for x
    x = 12,234,992,471.99/139,572.25
  6. Step 6: Final answer
    x = 87,660.64

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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.