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Finding the Fourth Proportional to 107,942.40, 161,654.40 and 87,206.40

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Solution

The fourth proportional to 107,942.40, 161,654.40 and 87,206.40 is: 130,600.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,942.40 : 161,654.40 = 87,206.40 : x
  2. Step 2: Convert to fraction form
    107,942.40/161,654.40 = 87,206.40/x
  3. Step 3: Cross multiply
    107,942.40x = 161,654.40 × 87,206.40
  4. Step 4: Simplify right side
    107,942.40x = 14,097,298,268.16
  5. Step 5: Solve for x
    x = 14,097,298,268.16/107,942.40
  6. Step 6: Final answer
    x = 130,600.19

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1.5x scale

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.