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Finding the Fourth Proportional to 139,446, 209,927.73 and 127,045.71

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Solution

The fourth proportional to 139,446, 209,927.73 and 127,045.71 is: 191,259.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,446 : 209,927.73 = 127,045.71 : x
  2. Step 2: Convert to fraction form
    139,446/209,927.73 = 127,045.71/x
  3. Step 3: Cross multiply
    139,446x = 209,927.73 × 127,045.71
  4. Step 4: Simplify right side
    139,446x = 26,670,417,506.54
  5. Step 5: Solve for x
    x = 26,670,417,506.54/139,446
  6. Step 6: Final answer
    x = 191,259.82

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.