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Finding the Fourth Proportional to 118,258.20, 177,095.70 and 78,600.60

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Solution

The fourth proportional to 118,258.20, 177,095.70 and 78,600.60 is: 117,707.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,258.20 : 177,095.70 = 78,600.60 : x
  2. Step 2: Convert to fraction form
    118,258.20/177,095.70 = 78,600.60/x
  3. Step 3: Cross multiply
    118,258.20x = 177,095.70 × 78,600.60
  4. Step 4: Simplify right side
    118,258.20x = 13,919,828,277.42
  5. Step 5: Solve for x
    x = 13,919,828,277.42/118,258.20
  6. Step 6: Final answer
    x = 117,707.09

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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.