Home / 115,985.90-160,071.75-65,007.23

Finding the Fourth Proportional to 115,985.90, 160,071.75 and 65,007.23

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Solution

The fourth proportional to 115,985.90, 160,071.75 and 65,007.23 is: 89,716.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,985.90 : 160,071.75 = 65,007.23 : x
  2. Step 2: Convert to fraction form
    115,985.90/160,071.75 = 65,007.23/x
  3. Step 3: Cross multiply
    115,985.90x = 160,071.75 × 65,007.23
  4. Step 4: Simplify right side
    115,985.90x = 10,405,820,268.39
  5. Step 5: Solve for x
    x = 10,405,820,268.39/115,985.90
  6. Step 6: Final answer
    x = 89,716.25

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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.