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Finding the Fourth Proportional to 118,470.40, 177,640.80 and 48,270.40

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Solution

The fourth proportional to 118,470.40, 177,640.80 and 48,270.40 is: 72,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,470.40 : 177,640.80 = 48,270.40 : x
  2. Step 2: Convert to fraction form
    118,470.40/177,640.80 = 48,270.40/x
  3. Step 3: Cross multiply
    118,470.40x = 177,640.80 × 48,270.40
  4. Step 4: Simplify right side
    118,470.40x = 8,574,792,472.32
  5. Step 5: Solve for x
    x = 8,574,792,472.32/118,470.40
  6. Step 6: Final answer
    x = 72,379.20

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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.