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Finding the Fourth Proportional to 150,473.52, 207,719.60 and 105,328.80

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Solution

The fourth proportional to 150,473.52, 207,719.60 and 105,328.80 is: 145,400.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,473.52 : 207,719.60 = 105,328.80 : x
  2. Step 2: Convert to fraction form
    150,473.52/207,719.60 = 105,328.80/x
  3. Step 3: Cross multiply
    150,473.52x = 207,719.60 × 105,328.80
  4. Step 4: Simplify right side
    150,473.52x = 21,878,856,204.48
  5. Step 5: Solve for x
    x = 21,878,856,204.48/150,473.52
  6. Step 6: Final answer
    x = 145,400.04

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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.