Home / 155,377.69-214,419.09-87,394.65

Finding the Fourth Proportional to 155,377.69, 214,419.09 and 87,394.65

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Solution

The fourth proportional to 155,377.69, 214,419.09 and 87,394.65 is: 120,603.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,377.69 : 214,419.09 = 87,394.65 : x
  2. Step 2: Convert to fraction form
    155,377.69/214,419.09 = 87,394.65/x
  3. Step 3: Cross multiply
    155,377.69x = 214,419.09 × 87,394.65
  4. Step 4: Simplify right side
    155,377.69x = 18,739,081,323.87
  5. Step 5: Solve for x
    x = 18,739,081,323.87/155,377.69
  6. Step 6: Final answer
    x = 120,603.42

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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.