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Finding the Fourth Proportional to 107,652.96, 148,066.56 and 86,385.60

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Solution

The fourth proportional to 107,652.96, 148,066.56 and 86,385.60 is: 118,815.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,652.96 : 148,066.56 = 86,385.60 : x
  2. Step 2: Convert to fraction form
    107,652.96/148,066.56 = 86,385.60/x
  3. Step 3: Cross multiply
    107,652.96x = 148,066.56 × 86,385.60
  4. Step 4: Simplify right side
    107,652.96x = 12,790,818,625.54
  5. Step 5: Solve for x
    x = 12,790,818,625.54/107,652.96
  6. Step 6: Final answer
    x = 118,815.30

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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.