Home / 115,693.12-159,656.03-64,705.64

Finding the Fourth Proportional to 115,693.12, 159,656.03 and 64,705.64

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Solution

The fourth proportional to 115,693.12, 159,656.03 and 64,705.64 is: 89,293.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,693.12 : 159,656.03 = 64,705.64 : x
  2. Step 2: Convert to fraction form
    115,693.12/159,656.03 = 64,705.64/x
  3. Step 3: Cross multiply
    115,693.12x = 159,656.03 × 64,705.64
  4. Step 4: Simplify right side
    115,693.12x = 10,330,645,601.01
  5. Step 5: Solve for x
    x = 10,330,645,601.01/115,693.12
  6. Step 6: Final answer
    x = 89,293.52

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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.