Home / 190,711.45-286,019.25-78,423.04

Finding the Fourth Proportional to 190,711.45, 286,019.25 and 78,423.04

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Solution

The fourth proportional to 190,711.45, 286,019.25 and 78,423.04 is: 117,614.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,711.45 : 286,019.25 = 78,423.04 : x
  2. Step 2: Convert to fraction form
    190,711.45/286,019.25 = 78,423.04/x
  3. Step 3: Cross multiply
    190,711.45x = 286,019.25 × 78,423.04
  4. Step 4: Simplify right side
    190,711.45x = 22,430,499,083.52
  5. Step 5: Solve for x
    x = 22,430,499,083.52/190,711.45
  6. Step 6: Final answer
    x = 117,614.85

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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.