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Finding the Fourth Proportional to 150,449.49, 207,612.59 and 86,783.49

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Solution

The fourth proportional to 150,449.49, 207,612.59 and 86,783.49 is: 119,756.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,449.49 : 207,612.59 = 86,783.49 : x
  2. Step 2: Convert to fraction form
    150,449.49/207,612.59 = 86,783.49/x
  3. Step 3: Cross multiply
    150,449.49x = 207,612.59 × 86,783.49
  4. Step 4: Simplify right side
    150,449.49x = 18,017,344,694.22
  5. Step 5: Solve for x
    x = 18,017,344,694.22/150,449.49
  6. Step 6: Final answer
    x = 119,756.77

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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.