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Finding the Fourth Proportional to 118,900.90, 178,369.80 and 40,008.97

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Solution

The fourth proportional to 118,900.90, 178,369.80 and 40,008.97 is: 60,019.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,900.90 : 178,369.80 = 40,008.97 : x
  2. Step 2: Convert to fraction form
    118,900.90/178,369.80 = 40,008.97/x
  3. Step 3: Cross multiply
    118,900.90x = 178,369.80 × 40,008.97
  4. Step 4: Simplify right side
    118,900.90x = 7,136,392,050.03
  5. Step 5: Solve for x
    x = 7,136,392,050.03/118,900.90
  6. Step 6: Final answer
    x = 60,019.66

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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.