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Finding the Fourth Proportional to 118,853.52, 178,168.64 and 39,912.39

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Solution

The fourth proportional to 118,853.52, 178,168.64 and 39,912.39 is: 59,831.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,853.52 : 178,168.64 = 39,912.39 : x
  2. Step 2: Convert to fraction form
    118,853.52/178,168.64 = 39,912.39/x
  3. Step 3: Cross multiply
    118,853.52x = 178,168.64 × 39,912.39
  4. Step 4: Simplify right side
    118,853.52x = 7,111,136,045.89
  5. Step 5: Solve for x
    x = 7,111,136,045.89/118,853.52
  6. Step 6: Final answer
    x = 59,831.09

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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.