Home / 151,990.12-209,739.81-84,003.58

Finding the Fourth Proportional to 151,990.12, 209,739.81 and 84,003.58

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Solution

The fourth proportional to 151,990.12, 209,739.81 and 84,003.58 is: 115,921.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,990.12 : 209,739.81 = 84,003.58 : x
  2. Step 2: Convert to fraction form
    151,990.12/209,739.81 = 84,003.58/x
  3. Step 3: Cross multiply
    151,990.12x = 209,739.81 × 84,003.58
  4. Step 4: Simplify right side
    151,990.12x = 17,618,894,908.52
  5. Step 5: Solve for x
    x = 17,618,894,908.52/151,990.12
  6. Step 6: Final answer
    x = 115,921.32

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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.