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Finding the Fourth Proportional to 139,796.68, 209,580.19 and 55,520.63

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Solution

The fourth proportional to 139,796.68, 209,580.19 and 55,520.63 is: 83,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,796.68 : 209,580.19 = 55,520.63 : x
  2. Step 2: Convert to fraction form
    139,796.68/209,580.19 = 55,520.63/x
  3. Step 3: Cross multiply
    139,796.68x = 209,580.19 × 55,520.63
  4. Step 4: Simplify right side
    139,796.68x = 11,636,024,184.32
  5. Step 5: Solve for x
    x = 11,636,024,184.32/139,796.68
  6. Step 6: Final answer
    x = 83,235.34

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1.5x scale

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.