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Finding the Fourth Proportional to 145,791.90, 218,612.22 and 66,838.14

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Solution

The fourth proportional to 145,791.90, 218,612.22 and 66,838.14 is: 100,222.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,791.90 : 218,612.22 = 66,838.14 : x
  2. Step 2: Convert to fraction form
    145,791.90/218,612.22 = 66,838.14/x
  3. Step 3: Cross multiply
    145,791.90x = 218,612.22 × 66,838.14
  4. Step 4: Simplify right side
    145,791.90x = 14,611,634,166.07
  5. Step 5: Solve for x
    x = 14,611,634,166.07/145,791.90
  6. Step 6: Final answer
    x = 100,222.54

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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.