Home / 190,412.20-285,618.30-72,087.40

Finding the Fourth Proportional to 190,412.20, 285,618.30 and 72,087.40

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Solution

The fourth proportional to 190,412.20, 285,618.30 and 72,087.40 is: 108,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,412.20 : 285,618.30 = 72,087.40 : x
  2. Step 2: Convert to fraction form
    190,412.20/285,618.30 = 72,087.40/x
  3. Step 3: Cross multiply
    190,412.20x = 285,618.30 × 72,087.40
  4. Step 4: Simplify right side
    190,412.20x = 20,589,480,639.42
  5. Step 5: Solve for x
    x = 20,589,480,639.42/190,412.20
  6. Step 6: Final answer
    x = 108,131.10

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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.