Home / 138,339.54-190,913.67-77,091.24

Finding the Fourth Proportional to 138,339.54, 190,913.67 and 77,091.24

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Solution

The fourth proportional to 138,339.54, 190,913.67 and 77,091.24 is: 106,388.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,339.54 : 190,913.67 = 77,091.24 : x
  2. Step 2: Convert to fraction form
    138,339.54/190,913.67 = 77,091.24/x
  3. Step 3: Cross multiply
    138,339.54x = 190,913.67 × 77,091.24
  4. Step 4: Simplify right side
    138,339.54x = 14,717,771,553.25
  5. Step 5: Solve for x
    x = 14,717,771,553.25/138,339.54
  6. Step 6: Final answer
    x = 106,388.76

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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.