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Finding the Fourth Proportional to 104,686.31, 144,405.61 and 65,862.41

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Solution

The fourth proportional to 104,686.31, 144,405.61 and 65,862.41 is: 90,851.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,686.31 : 144,405.61 = 65,862.41 : x
  2. Step 2: Convert to fraction form
    104,686.31/144,405.61 = 65,862.41/x
  3. Step 3: Cross multiply
    104,686.31x = 144,405.61 × 65,862.41
  4. Step 4: Simplify right side
    104,686.31x = 9,510,900,605.44
  5. Step 5: Solve for x
    x = 9,510,900,605.44/104,686.31
  6. Step 6: Final answer
    x = 90,851.42

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1.5x scale

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.