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Finding the Fourth Proportional to 139,026.66, 208,552.29 and 39,187.74

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Solution

The fourth proportional to 139,026.66, 208,552.29 and 39,187.74 is: 58,785.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,026.66 : 208,552.29 = 39,187.74 : x
  2. Step 2: Convert to fraction form
    139,026.66/208,552.29 = 39,187.74/x
  3. Step 3: Cross multiply
    139,026.66x = 208,552.29 × 39,187.74
  4. Step 4: Simplify right side
    139,026.66x = 8,172,692,916.92
  5. Step 5: Solve for x
    x = 8,172,692,916.92/139,026.66
  6. Step 6: Final answer
    x = 58,785.08

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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.