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Finding the Fourth Proportional to 109,894.60, 164,720.40 and 43,312.60

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Solution

The fourth proportional to 109,894.60, 164,720.40 and 43,312.60 is: 64,921.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,894.60 : 164,720.40 = 43,312.60 : x
  2. Step 2: Convert to fraction form
    109,894.60/164,720.40 = 43,312.60/x
  3. Step 3: Cross multiply
    109,894.60x = 164,720.40 × 43,312.60
  4. Step 4: Simplify right side
    109,894.60x = 7,134,468,797.04
  5. Step 5: Solve for x
    x = 7,134,468,797.04/109,894.60
  6. Step 6: Final answer
    x = 64,921.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.