Home / 190,688.80-285,903.60-72,342.40

Finding the Fourth Proportional to 190,688.80, 285,903.60 and 72,342.40

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Solution

The fourth proportional to 190,688.80, 285,903.60 and 72,342.40 is: 108,464.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,688.80 : 285,903.60 = 72,342.40 : x
  2. Step 2: Convert to fraction form
    190,688.80/285,903.60 = 72,342.40/x
  3. Step 3: Cross multiply
    190,688.80x = 285,903.60 × 72,342.40
  4. Step 4: Simplify right side
    190,688.80x = 20,682,952,592.64
  5. Step 5: Solve for x
    x = 20,682,952,592.64/190,688.80
  6. Step 6: Final answer
    x = 108,464.43

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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.