Home / 155,976.83-214,776.18-128,651.34

Finding the Fourth Proportional to 155,976.83, 214,776.18 and 128,651.34

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Solution

The fourth proportional to 155,976.83, 214,776.18 and 128,651.34 is: 177,149.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,976.83 : 214,776.18 = 128,651.34 : x
  2. Step 2: Convert to fraction form
    155,976.83/214,776.18 = 128,651.34/x
  3. Step 3: Cross multiply
    155,976.83x = 214,776.18 × 128,651.34
  4. Step 4: Simplify right side
    155,976.83x = 27,631,243,357.08
  5. Step 5: Solve for x
    x = 27,631,243,357.08/155,976.83
  6. Step 6: Final answer
    x = 177,149.67

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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.