Home / 190,945.20-286,309.80-72,620.40

Finding the Fourth Proportional to 190,945.20, 286,309.80 and 72,620.40

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Solution

The fourth proportional to 190,945.20, 286,309.80 and 72,620.40 is: 108,889.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,945.20 : 286,309.80 = 72,620.40 : x
  2. Step 2: Convert to fraction form
    190,945.20/286,309.80 = 72,620.40/x
  3. Step 3: Cross multiply
    190,945.20x = 286,309.80 × 72,620.40
  4. Step 4: Simplify right side
    190,945.20x = 20,791,932,199.92
  5. Step 5: Solve for x
    x = 20,791,932,199.92/190,945.20
  6. Step 6: Final answer
    x = 108,889.53

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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.