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Finding the Fourth Proportional to 159,843,699.21, 220,584,302.24 and 86,504,841.21

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Solution

The fourth proportional to 159,843,699.21, 220,584,302.24 and 86,504,841.21 is: 119,376,679.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,843,699.21 : 220,584,302.24 = 86,504,841.21 : x
  2. Step 2: Convert to fraction form
    159,843,699.21/220,584,302.24 = 86,504,841.21/x
  3. Step 3: Cross multiply
    159,843,699.21x = 220,584,302.24 × 86,504,841.21
  4. Step 4: Simplify right side
    159,843,699.21x = 19,081,610,038,257,324
  5. Step 5: Solve for x
    x = 19,081,610,038,257,324/159,843,699.21
  6. Step 6: Final answer
    x = 119,376,679.42

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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.