Home / 155,451.69-214,559.19-90,950.94

Finding the Fourth Proportional to 155,451.69, 214,559.19 and 90,950.94

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Solution

The fourth proportional to 155,451.69, 214,559.19 and 90,950.94 is: 125,533.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,451.69 : 214,559.19 = 90,950.94 : x
  2. Step 2: Convert to fraction form
    155,451.69/214,559.19 = 90,950.94/x
  3. Step 3: Cross multiply
    155,451.69x = 214,559.19 × 90,950.94
  4. Step 4: Simplify right side
    155,451.69x = 19,514,360,016.14
  5. Step 5: Solve for x
    x = 19,514,360,016.14/155,451.69
  6. Step 6: Final answer
    x = 125,533.28

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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.