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Finding the Fourth Proportional to 155,431.83, 214,495.93 and 88,363.83

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Solution

The fourth proportional to 155,431.83, 214,495.93 and 88,363.83 is: 121,942.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,431.83 : 214,495.93 = 88,363.83 : x
  2. Step 2: Convert to fraction form
    155,431.83/214,495.93 = 88,363.83/x
  3. Step 3: Cross multiply
    155,431.83x = 214,495.93 × 88,363.83
  4. Step 4: Simplify right side
    155,431.83x = 18,953,681,602.49
  5. Step 5: Solve for x
    x = 18,953,681,602.49/155,431.83
  6. Step 6: Final answer
    x = 121,942.09

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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.