Home / 129,382.44-178,547.73-72,020.51

Finding the Fourth Proportional to 129,382.44, 178,547.73 and 72,020.51

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Solution

The fourth proportional to 129,382.44, 178,547.73 and 72,020.51 is: 99,388.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,382.44 : 178,547.73 = 72,020.51 : x
  2. Step 2: Convert to fraction form
    129,382.44/178,547.73 = 72,020.51/x
  3. Step 3: Cross multiply
    129,382.44x = 178,547.73 × 72,020.51
  4. Step 4: Simplify right side
    129,382.44x = 12,859,099,085.01
  5. Step 5: Solve for x
    x = 12,859,099,085.01/129,382.44
  6. Step 6: Final answer
    x = 99,388.29

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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.