Home / 190,137.80-285,221.55-84,967.40

Finding the Fourth Proportional to 190,137.80, 285,221.55 and 84,967.40

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Solution

The fourth proportional to 190,137.80, 285,221.55 and 84,967.40 is: 127,457.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,137.80 : 285,221.55 = 84,967.40 : x
  2. Step 2: Convert to fraction form
    190,137.80/285,221.55 = 84,967.40/x
  3. Step 3: Cross multiply
    190,137.80x = 285,221.55 × 84,967.40
  4. Step 4: Simplify right side
    190,137.80x = 24,234,533,527.47
  5. Step 5: Solve for x
    x = 24,234,533,527.47/190,137.80
  6. Step 6: Final answer
    x = 127,457.74

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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.