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Finding the Fourth Proportional to 120,293.60, 165,946.70 and 79,473.74

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Solution

The fourth proportional to 120,293.60, 165,946.70 and 79,473.74 is: 109,635.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,293.60 : 165,946.70 = 79,473.74 : x
  2. Step 2: Convert to fraction form
    120,293.60/165,946.70 = 79,473.74/x
  3. Step 3: Cross multiply
    120,293.60x = 165,946.70 × 79,473.74
  4. Step 4: Simplify right side
    120,293.60x = 13,188,404,889.66
  5. Step 5: Solve for x
    x = 13,188,404,889.66/120,293.60
  6. Step 6: Final answer
    x = 109,635.13

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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.