Home / 129,776.03-179,085.89-72,412.37

Finding the Fourth Proportional to 129,776.03, 179,085.89 and 72,412.37

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Solution

The fourth proportional to 129,776.03, 179,085.89 and 72,412.37 is: 99,926.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,776.03 : 179,085.89 = 72,412.37 : x
  2. Step 2: Convert to fraction form
    129,776.03/179,085.89 = 72,412.37/x
  3. Step 3: Cross multiply
    129,776.03x = 179,085.89 × 72,412.37
  4. Step 4: Simplify right side
    129,776.03x = 12,968,032,470.97
  5. Step 5: Solve for x
    x = 12,968,032,470.97/129,776.03
  6. Step 6: Final answer
    x = 99,926.26

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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.