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Finding the Fourth Proportional to 171,313.68, 257,264.55 and 105,142.38

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Solution

The fourth proportional to 171,313.68, 257,264.55 and 105,142.38 is: 157,894.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,313.68 : 257,264.55 = 105,142.38 : x
  2. Step 2: Convert to fraction form
    171,313.68/257,264.55 = 105,142.38/x
  3. Step 3: Cross multiply
    171,313.68x = 257,264.55 × 105,142.38
  4. Step 4: Simplify right side
    171,313.68x = 27,049,407,076.63
  5. Step 5: Solve for x
    x = 27,049,407,076.63/171,313.68
  6. Step 6: Final answer
    x = 157,894.03

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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.