Home / 190,407.28-285,578.58-89,215.84

Finding the Fourth Proportional to 190,407.28, 285,578.58 and 89,215.84

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Solution

The fourth proportional to 190,407.28, 285,578.58 and 89,215.84 is: 133,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,407.28 : 285,578.58 = 89,215.84 : x
  2. Step 2: Convert to fraction form
    190,407.28/285,578.58 = 89,215.84/x
  3. Step 3: Cross multiply
    190,407.28x = 285,578.58 × 89,215.84
  4. Step 4: Simplify right side
    190,407.28x = 25,478,132,900.71
  5. Step 5: Solve for x
    x = 25,478,132,900.71/190,407.28
  6. Step 6: Final answer
    x = 133,808.61

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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.