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Finding the Fourth Proportional to 104,862.31, 144,720.04 and 64,599.64

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Solution

The fourth proportional to 104,862.31, 144,720.04 and 64,599.64 is: 89,153.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,862.31 : 144,720.04 = 64,599.64 : x
  2. Step 2: Convert to fraction form
    104,862.31/144,720.04 = 64,599.64/x
  3. Step 3: Cross multiply
    104,862.31x = 144,720.04 × 64,599.64
  4. Step 4: Simplify right side
    104,862.31x = 9,348,861,961.49
  5. Step 5: Solve for x
    x = 9,348,861,961.49/104,862.31
  6. Step 6: Final answer
    x = 89,153.69

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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.