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Finding the Fourth Proportional to 118,483.20, 177,724.80 and 74,246.40

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Solution

The fourth proportional to 118,483.20, 177,724.80 and 74,246.40 is: 111,369.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,483.20 : 177,724.80 = 74,246.40 : x
  2. Step 2: Convert to fraction form
    118,483.20/177,724.80 = 74,246.40/x
  3. Step 3: Cross multiply
    118,483.20x = 177,724.80 × 74,246.40
  4. Step 4: Simplify right side
    118,483.20x = 13,195,426,590.72
  5. Step 5: Solve for x
    x = 13,195,426,590.72/118,483.20
  6. Step 6: Final answer
    x = 111,369.60

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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.