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Finding the Fourth Proportional to 107,902.60, 161,853.90 and 70,577.80

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Solution

The fourth proportional to 107,902.60, 161,853.90 and 70,577.80 is: 105,866.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,902.60 : 161,853.90 = 70,577.80 : x
  2. Step 2: Convert to fraction form
    107,902.60/161,853.90 = 70,577.80/x
  3. Step 3: Cross multiply
    107,902.60x = 161,853.90 × 70,577.80
  4. Step 4: Simplify right side
    107,902.60x = 11,423,292,183.42
  5. Step 5: Solve for x
    x = 11,423,292,183.42/107,902.60
  6. Step 6: Final answer
    x = 105,866.70

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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.