Home / 190,811.70-286,217.55-57,785.40

Finding the Fourth Proportional to 190,811.70, 286,217.55 and 57,785.40

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Solution

The fourth proportional to 190,811.70, 286,217.55 and 57,785.40 is: 86,678.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,811.70 : 286,217.55 = 57,785.40 : x
  2. Step 2: Convert to fraction form
    190,811.70/286,217.55 = 57,785.40/x
  3. Step 3: Cross multiply
    190,811.70x = 286,217.55 × 57,785.40
  4. Step 4: Simplify right side
    190,811.70x = 16,539,195,613.77
  5. Step 5: Solve for x
    x = 16,539,195,613.77/190,811.70
  6. Step 6: Final answer
    x = 86,678.10

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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.