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Finding the Fourth Proportional to 118,663.20, 177,994.80 and 74,426.40

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Solution

The fourth proportional to 118,663.20, 177,994.80 and 74,426.40 is: 111,639.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,663.20 : 177,994.80 = 74,426.40 : x
  2. Step 2: Convert to fraction form
    118,663.20/177,994.80 = 74,426.40/x
  3. Step 3: Cross multiply
    118,663.20x = 177,994.80 × 74,426.40
  4. Step 4: Simplify right side
    118,663.20x = 13,247,512,182.72
  5. Step 5: Solve for x
    x = 13,247,512,182.72/118,663.20
  6. Step 6: Final answer
    x = 111,639.60

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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.