Home / 115,301.52-159,109.92-64,997.28

Finding the Fourth Proportional to 115,301.52, 159,109.92 and 64,997.28

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Solution

The fourth proportional to 115,301.52, 159,109.92 and 64,997.28 is: 89,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,301.52 : 159,109.92 = 64,997.28 : x
  2. Step 2: Convert to fraction form
    115,301.52/159,109.92 = 64,997.28/x
  3. Step 3: Cross multiply
    115,301.52x = 159,109.92 × 64,997.28
  4. Step 4: Simplify right side
    115,301.52x = 10,341,712,021.02
  5. Step 5: Solve for x
    x = 10,341,712,021.02/115,301.52
  6. Step 6: Final answer
    x = 89,692.76

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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.