Home / 109,918.81-164,762.78-69,968.39

Finding the Fourth Proportional to 109,918.81, 164,762.78 and 69,968.39

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Solution

The fourth proportional to 109,918.81, 164,762.78 and 69,968.39 is: 104,879.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,918.81 : 164,762.78 = 69,968.39 : x
  2. Step 2: Convert to fraction form
    109,918.81/164,762.78 = 69,968.39/x
  3. Step 3: Cross multiply
    109,918.81x = 164,762.78 × 69,968.39
  4. Step 4: Simplify right side
    109,918.81x = 11,528,186,448.52
  5. Step 5: Solve for x
    x = 11,528,186,448.52/109,918.81
  6. Step 6: Final answer
    x = 104,879.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.