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Finding the Fourth Proportional to 115,997.63, 160,074 and 68,254.07

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Solution

The fourth proportional to 115,997.63, 160,074 and 68,254.07 is: 94,189.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,997.63 : 160,074 = 68,254.07 : x
  2. Step 2: Convert to fraction form
    115,997.63/160,074 = 68,254.07/x
  3. Step 3: Cross multiply
    115,997.63x = 160,074 × 68,254.07
  4. Step 4: Simplify right side
    115,997.63x = 10,925,701,200.81
  5. Step 5: Solve for x
    x = 10,925,701,200.81/115,997.63
  6. Step 6: Final answer
    x = 94,189.01

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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.