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Finding the Fourth Proportional to 112,468.35, 155,105.79 and 93,317.79

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Solution

The fourth proportional to 112,468.35, 155,105.79 and 93,317.79 is: 128,695.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,468.35 : 155,105.79 = 93,317.79 : x
  2. Step 2: Convert to fraction form
    112,468.35/155,105.79 = 93,317.79/x
  3. Step 3: Cross multiply
    112,468.35x = 155,105.79 × 93,317.79
  4. Step 4: Simplify right side
    112,468.35x = 14,474,129,539.00
  5. Step 5: Solve for x
    x = 14,474,129,539.00/112,468.35
  6. Step 6: Final answer
    x = 128,695.14

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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.