Home / 115,530.48-159,436.44-64,540.56

Finding the Fourth Proportional to 115,530.48, 159,436.44 and 64,540.56

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Solution

The fourth proportional to 115,530.48, 159,436.44 and 64,540.56 is: 89,068.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,530.48 : 159,436.44 = 64,540.56 : x
  2. Step 2: Convert to fraction form
    115,530.48/159,436.44 = 64,540.56/x
  3. Step 3: Cross multiply
    115,530.48x = 159,436.44 × 64,540.56
  4. Step 4: Simplify right side
    115,530.48x = 10,290,117,122.01
  5. Step 5: Solve for x
    x = 10,290,117,122.01/115,530.48
  6. Step 6: Final answer
    x = 89,068.42

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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.