Home / 129,621.10-178,876.32-75,895.32

Finding the Fourth Proportional to 129,621.10, 178,876.32 and 75,895.32

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Solution

The fourth proportional to 129,621.10, 178,876.32 and 75,895.32 is: 104,735.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,621.10 : 178,876.32 = 75,895.32 : x
  2. Step 2: Convert to fraction form
    129,621.10/178,876.32 = 75,895.32/x
  3. Step 3: Cross multiply
    129,621.10x = 178,876.32 × 75,895.32
  4. Step 4: Simplify right side
    129,621.10x = 13,575,875,546.82
  5. Step 5: Solve for x
    x = 13,575,875,546.82/129,621.10
  6. Step 6: Final answer
    x = 104,735.07

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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.