Home / 115,676.91-159,633.02-64,689.05

Finding the Fourth Proportional to 115,676.91, 159,633.02 and 64,689.05

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Solution

The fourth proportional to 115,676.91, 159,633.02 and 64,689.05 is: 89,270.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,676.91 : 159,633.02 = 64,689.05 : x
  2. Step 2: Convert to fraction form
    115,676.91/159,633.02 = 64,689.05/x
  3. Step 3: Cross multiply
    115,676.91x = 159,633.02 × 64,689.05
  4. Step 4: Simplify right side
    115,676.91x = 10,326,508,973.24
  5. Step 5: Solve for x
    x = 10,326,508,973.24/115,676.91
  6. Step 6: Final answer
    x = 89,270.27

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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.