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Finding the Fourth Proportional to 139,035.30, 208,552.95 and 139,035.30

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Solution

The fourth proportional to 139,035.30, 208,552.95 and 139,035.30 is: 208,552.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,035.30 : 208,552.95 = 139,035.30 : x
  2. Step 2: Convert to fraction form
    139,035.30/208,552.95 = 139,035.30/x
  3. Step 3: Cross multiply
    139,035.30x = 208,552.95 × 139,035.30
  4. Step 4: Simplify right side
    139,035.30x = 28,996,221,969.14
  5. Step 5: Solve for x
    x = 28,996,221,969.14/139,035.30
  6. Step 6: Final answer
    x = 208,552.95

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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.