Home / 131,015.57-180,802.19-74,428.97

Finding the Fourth Proportional to 131,015.57, 180,802.19 and 74,428.97

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Solution

The fourth proportional to 131,015.57, 180,802.19 and 74,428.97 is: 102,712.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,015.57 : 180,802.19 = 74,428.97 : x
  2. Step 2: Convert to fraction form
    131,015.57/180,802.19 = 74,428.97/x
  3. Step 3: Cross multiply
    131,015.57x = 180,802.19 × 74,428.97
  4. Step 4: Simplify right side
    131,015.57x = 13,456,920,057.51
  5. Step 5: Solve for x
    x = 13,456,920,057.51/131,015.57
  6. Step 6: Final answer
    x = 102,712.38

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1.5x scale

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.