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Finding the Fourth Proportional to 118,366.40, 177,549.60 and 74,129.60

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Solution

The fourth proportional to 118,366.40, 177,549.60 and 74,129.60 is: 111,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,366.40 : 177,549.60 = 74,129.60 : x
  2. Step 2: Convert to fraction form
    118,366.40/177,549.60 = 74,129.60/x
  3. Step 3: Cross multiply
    118,366.40x = 177,549.60 × 74,129.60
  4. Step 4: Simplify right side
    118,366.40x = 13,161,680,828.16
  5. Step 5: Solve for x
    x = 13,161,680,828.16/118,366.40
  6. Step 6: Final answer
    x = 111,194.40

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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.