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Finding the Fourth Proportional to 107,771.70, 161,657.55 and 70,446.90

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Solution

The fourth proportional to 107,771.70, 161,657.55 and 70,446.90 is: 105,670.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,771.70 : 161,657.55 = 70,446.90 : x
  2. Step 2: Convert to fraction form
    107,771.70/161,657.55 = 70,446.90/x
  3. Step 3: Cross multiply
    107,771.70x = 161,657.55 × 70,446.90
  4. Step 4: Simplify right side
    107,771.70x = 11,388,273,259.10
  5. Step 5: Solve for x
    x = 11,388,273,259.10/107,771.70
  6. Step 6: Final answer
    x = 105,670.35

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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.