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Finding the Fourth Proportional to 145,424.78, 200,620.61 and 84,968.24

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Solution

The fourth proportional to 145,424.78, 200,620.61 and 84,968.24 is: 117,217.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,424.78 : 200,620.61 = 84,968.24 : x
  2. Step 2: Convert to fraction form
    145,424.78/200,620.61 = 84,968.24/x
  3. Step 3: Cross multiply
    145,424.78x = 200,620.61 × 84,968.24
  4. Step 4: Simplify right side
    145,424.78x = 17,046,378,711.48
  5. Step 5: Solve for x
    x = 17,046,378,711.48/145,424.78
  6. Step 6: Final answer
    x = 117,217.84

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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.