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Finding the Fourth Proportional to 145,469.64, 200,746.68 and 81,807.84

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Solution

The fourth proportional to 145,469.64, 200,746.68 and 81,807.84 is: 112,894.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,469.64 : 200,746.68 = 81,807.84 : x
  2. Step 2: Convert to fraction form
    145,469.64/200,746.68 = 81,807.84/x
  3. Step 3: Cross multiply
    145,469.64x = 200,746.68 × 81,807.84
  4. Step 4: Simplify right side
    145,469.64x = 16,422,652,277.97
  5. Step 5: Solve for x
    x = 16,422,652,277.97/145,469.64
  6. Step 6: Final answer
    x = 112,894.02

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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.