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Finding the Fourth Proportional to 107,078.80, 160,618.20 and 57,312.40

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Solution

The fourth proportional to 107,078.80, 160,618.20 and 57,312.40 is: 85,968.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,078.80 : 160,618.20 = 57,312.40 : x
  2. Step 2: Convert to fraction form
    107,078.80/160,618.20 = 57,312.40/x
  3. Step 3: Cross multiply
    107,078.80x = 160,618.20 × 57,312.40
  4. Step 4: Simplify right side
    107,078.80x = 9,205,414,525.68
  5. Step 5: Solve for x
    x = 9,205,414,525.68/107,078.80
  6. Step 6: Final answer
    x = 85,968.60

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