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Finding the Fourth Proportional to 208,709.12, 288,018.68 and 118,063.19

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Solution

The fourth proportional to 208,709.12, 288,018.68 and 118,063.19 is: 162,927.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,709.12 : 288,018.68 = 118,063.19 : x
  2. Step 2: Convert to fraction form
    208,709.12/288,018.68 = 118,063.19/x
  3. Step 3: Cross multiply
    208,709.12x = 288,018.68 × 118,063.19
  4. Step 4: Simplify right side
    208,709.12x = 34,004,402,109.98
  5. Step 5: Solve for x
    x = 34,004,402,109.98/208,709.12
  6. Step 6: Final answer
    x = 162,927.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.