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Finding the Fourth Proportional to 139,595.99, 209,463.18 and 55,354.35

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Solution

The fourth proportional to 139,595.99, 209,463.18 and 55,354.35 is: 83,058.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,595.99 : 209,463.18 = 55,354.35 : x
  2. Step 2: Convert to fraction form
    139,595.99/209,463.18 = 55,354.35/x
  3. Step 3: Cross multiply
    139,595.99x = 209,463.18 × 55,354.35
  4. Step 4: Simplify right side
    139,595.99x = 11,594,698,177.83
  5. Step 5: Solve for x
    x = 11,594,698,177.83/139,595.99
  6. Step 6: Final answer
    x = 83,058.96

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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.