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Finding the Fourth Proportional to 118,959.60, 178,463.70 and 40,081.80

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Solution

The fourth proportional to 118,959.60, 178,463.70 and 40,081.80 is: 60,130.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,959.60 : 178,463.70 = 40,081.80 : x
  2. Step 2: Convert to fraction form
    118,959.60/178,463.70 = 40,081.80/x
  3. Step 3: Cross multiply
    118,959.60x = 178,463.70 × 40,081.80
  4. Step 4: Simplify right side
    118,959.60x = 7,153,146,330.66
  5. Step 5: Solve for x
    x = 7,153,146,330.66/118,959.60
  6. Step 6: Final answer
    x = 60,130.89

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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.