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Finding the Fourth Proportional to 199,574.40, 299,118.60 and 87,016.80

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Solution

The fourth proportional to 199,574.40, 299,118.60 and 87,016.80 is: 130,419.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,574.40 : 299,118.60 = 87,016.80 : x
  2. Step 2: Convert to fraction form
    199,574.40/299,118.60 = 87,016.80/x
  3. Step 3: Cross multiply
    199,574.40x = 299,118.60 × 87,016.80
  4. Step 4: Simplify right side
    199,574.40x = 26,028,343,392.48
  5. Step 5: Solve for x
    x = 26,028,343,392.48/199,574.40
  6. Step 6: Final answer
    x = 130,419.25

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1.5x scale

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.