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Finding the Fourth Proportional to 145,270.78, 200,492.36 and 81,608.62

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Solution

The fourth proportional to 145,270.78, 200,492.36 and 81,608.62 is: 112,630.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,270.78 : 200,492.36 = 81,608.62 : x
  2. Step 2: Convert to fraction form
    145,270.78/200,492.36 = 81,608.62/x
  3. Step 3: Cross multiply
    145,270.78x = 200,492.36 × 81,608.62
  4. Step 4: Simplify right side
    145,270.78x = 16,361,904,820.14
  5. Step 5: Solve for x
    x = 16,361,904,820.14/145,270.78
  6. Step 6: Final answer
    x = 112,630.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.