Home / 117,738.04-176,481.24-85,640.16

Finding the Fourth Proportional to 117,738.04, 176,481.24 and 85,640.16

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Solution

The fourth proportional to 117,738.04, 176,481.24 and 85,640.16 is: 128,368.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,738.04 : 176,481.24 = 85,640.16 : x
  2. Step 2: Convert to fraction form
    117,738.04/176,481.24 = 85,640.16/x
  3. Step 3: Cross multiply
    117,738.04x = 176,481.24 × 85,640.16
  4. Step 4: Simplify right side
    117,738.04x = 15,113,881,630.60
  5. Step 5: Solve for x
    x = 15,113,881,630.60/117,738.04
  6. Step 6: Final answer
    x = 128,368.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.