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Finding the Fourth Proportional to 139,235.04, 208,819.07 and 64,283.18

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Solution

The fourth proportional to 139,235.04, 208,819.07 and 64,283.18 is: 96,409.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235.04 : 208,819.07 = 64,283.18 : x
  2. Step 2: Convert to fraction form
    139,235.04/208,819.07 = 64,283.18/x
  3. Step 3: Cross multiply
    139,235.04x = 208,819.07 × 64,283.18
  4. Step 4: Simplify right side
    139,235.04x = 13,423,552,498.73
  5. Step 5: Solve for x
    x = 13,423,552,498.73/139,235.04
  6. Step 6: Final answer
    x = 96,409.30

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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.