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Finding the Fourth Proportional to 112,566, 155,355.66 and 64,811.64

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Solution

The fourth proportional to 112,566, 155,355.66 and 64,811.64 is: 89,448.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,566 : 155,355.66 = 64,811.64 : x
  2. Step 2: Convert to fraction form
    112,566/155,355.66 = 64,811.64/x
  3. Step 3: Cross multiply
    112,566x = 155,355.66 × 64,811.64
  4. Step 4: Simplify right side
    112,566x = 10,068,855,107.88
  5. Step 5: Solve for x
    x = 10,068,855,107.88/112,566
  6. Step 6: Final answer
    x = 89,448.46

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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.