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Finding the Fourth Proportional to 115,300.89, 159,108.37 and 66,899.07

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Solution

The fourth proportional to 115,300.89, 159,108.37 and 66,899.07 is: 92,316.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,300.89 : 159,108.37 = 66,899.07 : x
  2. Step 2: Convert to fraction form
    115,300.89/159,108.37 = 66,899.07/x
  3. Step 3: Cross multiply
    115,300.89x = 159,108.37 × 66,899.07
  4. Step 4: Simplify right side
    115,300.89x = 10,644,201,982.22
  5. Step 5: Solve for x
    x = 10,644,201,982.22/115,300.89
  6. Step 6: Final answer
    x = 92,316.74

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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.