Home / 138,018.04-190,464.10-84,295.60

Finding the Fourth Proportional to 138,018.04, 190,464.10 and 84,295.60

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Solution

The fourth proportional to 138,018.04, 190,464.10 and 84,295.60 is: 116,327.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,018.04 : 190,464.10 = 84,295.60 : x
  2. Step 2: Convert to fraction form
    138,018.04/190,464.10 = 84,295.60/x
  3. Step 3: Cross multiply
    138,018.04x = 190,464.10 × 84,295.60
  4. Step 4: Simplify right side
    138,018.04x = 16,055,285,587.96
  5. Step 5: Solve for x
    x = 16,055,285,587.96/138,018.04
  6. Step 6: Final answer
    x = 116,327.44

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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.