Home / 131,022.32-180,815.64-74,443.28

Finding the Fourth Proportional to 131,022.32, 180,815.64 and 74,443.28

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Solution

The fourth proportional to 131,022.32, 180,815.64 and 74,443.28 is: 102,734.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,022.32 : 180,815.64 = 74,443.28 : x
  2. Step 2: Convert to fraction form
    131,022.32/180,815.64 = 74,443.28/x
  3. Step 3: Cross multiply
    131,022.32x = 180,815.64 × 74,443.28
  4. Step 4: Simplify right side
    131,022.32x = 13,460,509,316.90
  5. Step 5: Solve for x
    x = 13,460,509,316.90/131,022.32
  6. Step 6: Final answer
    x = 102,734.48

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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.