Home / 190,709.07-286,050.91-78,360.18

Finding the Fourth Proportional to 190,709.07, 286,050.91 and 78,360.18

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Solution

The fourth proportional to 190,709.07, 286,050.91 and 78,360.18 is: 117,535.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,709.07 : 286,050.91 = 78,360.18 : x
  2. Step 2: Convert to fraction form
    190,709.07/286,050.91 = 78,360.18/x
  3. Step 3: Cross multiply
    190,709.07x = 286,050.91 × 78,360.18
  4. Step 4: Simplify right side
    190,709.07x = 22,415,000,796.76
  5. Step 5: Solve for x
    x = 22,415,000,796.76/190,709.07
  6. Step 6: Final answer
    x = 117,535.05

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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.