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Finding the Fourth Proportional to 139,210.65, 208,819.22 and 34,030.53

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Solution

The fourth proportional to 139,210.65, 208,819.22 and 34,030.53 is: 51,046.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,210.65 : 208,819.22 = 34,030.53 : x
  2. Step 2: Convert to fraction form
    139,210.65/208,819.22 = 34,030.53/x
  3. Step 3: Cross multiply
    139,210.65x = 208,819.22 × 34,030.53
  4. Step 4: Simplify right side
    139,210.65x = 7,106,228,560.63
  5. Step 5: Solve for x
    x = 7,106,228,560.63/139,210.65
  6. Step 6: Final answer
    x = 51,046.59

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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.