Home / 129,285.09-178,412.91-75,559.29

Finding the Fourth Proportional to 129,285.09, 178,412.91 and 75,559.29

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Solution

The fourth proportional to 129,285.09, 178,412.91 and 75,559.29 is: 104,271.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,285.09 : 178,412.91 = 75,559.29 : x
  2. Step 2: Convert to fraction form
    129,285.09/178,412.91 = 75,559.29/x
  3. Step 3: Cross multiply
    129,285.09x = 178,412.91 × 75,559.29
  4. Step 4: Simplify right side
    129,285.09x = 13,480,752,806.43
  5. Step 5: Solve for x
    x = 13,480,752,806.43/129,285.09
  6. Step 6: Final answer
    x = 104,271.52

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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.