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Finding the Fourth Proportional to 108,525.60, 162,788.40 and 91,029.60

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Solution

The fourth proportional to 108,525.60, 162,788.40 and 91,029.60 is: 136,544.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,525.60 : 162,788.40 = 91,029.60 : x
  2. Step 2: Convert to fraction form
    108,525.60/162,788.40 = 91,029.60/x
  3. Step 3: Cross multiply
    108,525.60x = 162,788.40 × 91,029.60
  4. Step 4: Simplify right side
    108,525.60x = 14,818,562,936.64
  5. Step 5: Solve for x
    x = 14,818,562,936.64/108,525.60
  6. Step 6: Final answer
    x = 136,544.40

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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.