Home / 130,979.88-180,673.47-79,969.32

Finding the Fourth Proportional to 130,979.88, 180,673.47 and 79,969.32

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Solution

The fourth proportional to 130,979.88, 180,673.47 and 79,969.32 is: 110,309.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,979.88 : 180,673.47 = 79,969.32 : x
  2. Step 2: Convert to fraction form
    130,979.88/180,673.47 = 79,969.32/x
  3. Step 3: Cross multiply
    130,979.88x = 180,673.47 × 79,969.32
  4. Step 4: Simplify right side
    130,979.88x = 14,448,334,537.94
  5. Step 5: Solve for x
    x = 14,448,334,537.94/130,979.88
  6. Step 6: Final answer
    x = 110,309.57

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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.