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Finding the Fourth Proportional to 112,392, 155,102.40 and 62,095.68

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Solution

The fourth proportional to 112,392, 155,102.40 and 62,095.68 is: 85,692.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,392 : 155,102.40 = 62,095.68 : x
  2. Step 2: Convert to fraction form
    112,392/155,102.40 = 62,095.68/x
  3. Step 3: Cross multiply
    112,392x = 155,102.40 × 62,095.68
  4. Step 4: Simplify right side
    112,392x = 9,631,188,997.63
  5. Step 5: Solve for x
    x = 9,631,188,997.63/112,392
  6. Step 6: Final answer
    x = 85,692.83

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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.