Home / 190,900.40-286,264.20-85,665.20

Finding the Fourth Proportional to 190,900.40, 286,264.20 and 85,665.20

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Solution

The fourth proportional to 190,900.40, 286,264.20 and 85,665.20 is: 128,459.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,900.40 : 286,264.20 = 85,665.20 : x
  2. Step 2: Convert to fraction form
    190,900.40/286,264.20 = 85,665.20/x
  3. Step 3: Cross multiply
    190,900.40x = 286,264.20 × 85,665.20
  4. Step 4: Simplify right side
    190,900.40x = 24,522,879,945.84
  5. Step 5: Solve for x
    x = 24,522,879,945.84/190,900.40
  6. Step 6: Final answer
    x = 128,459.03

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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.