Home / 118,014.99-162,921-79,975.50

Finding the Fourth Proportional to 118,014.99, 162,921 and 79,975.50

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Solution

The fourth proportional to 118,014.99, 162,921 and 79,975.50 is: 110,407.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,014.99 : 162,921 = 79,975.50 : x
  2. Step 2: Convert to fraction form
    118,014.99/162,921 = 79,975.50/x
  3. Step 3: Cross multiply
    118,014.99x = 162,921 × 79,975.50
  4. Step 4: Simplify right side
    118,014.99x = 13,029,688,435.50
  5. Step 5: Solve for x
    x = 13,029,688,435.50/118,014.99
  6. Step 6: Final answer
    x = 110,407.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.