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Finding the Fourth Proportional to 119,970.87, 165,560.04 and 66,258.15

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Solution

The fourth proportional to 119,970.87, 165,560.04 and 66,258.15 is: 91,436.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,970.87 : 165,560.04 = 66,258.15 : x
  2. Step 2: Convert to fraction form
    119,970.87/165,560.04 = 66,258.15/x
  3. Step 3: Cross multiply
    119,970.87x = 165,560.04 × 66,258.15
  4. Step 4: Simplify right side
    119,970.87x = 10,969,701,964.33
  5. Step 5: Solve for x
    x = 10,969,701,964.33/119,970.87
  6. Step 6: Final answer
    x = 91,436.38

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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.