Home / 138,250.10-190,816.36-84,579.86

Finding the Fourth Proportional to 138,250.10, 190,816.36 and 84,579.86

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Solution

The fourth proportional to 138,250.10, 190,816.36 and 84,579.86 is: 116,739.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,250.10 : 190,816.36 = 84,579.86 : x
  2. Step 2: Convert to fraction form
    138,250.10/190,816.36 = 84,579.86/x
  3. Step 3: Cross multiply
    138,250.10x = 190,816.36 × 84,579.86
  4. Step 4: Simplify right side
    138,250.10x = 16,139,221,014.51
  5. Step 5: Solve for x
    x = 16,139,221,014.51/138,250.10
  6. Step 6: Final answer
    x = 116,739.31

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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.