Home / 155,137.03-214,065.78-87,140.98

Finding the Fourth Proportional to 155,137.03, 214,065.78 and 87,140.98

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Solution

The fourth proportional to 155,137.03, 214,065.78 and 87,140.98 is: 120,241.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,137.03 : 214,065.78 = 87,140.98 : x
  2. Step 2: Convert to fraction form
    155,137.03/214,065.78 = 87,140.98/x
  3. Step 3: Cross multiply
    155,137.03x = 214,065.78 × 87,140.98
  4. Step 4: Simplify right side
    155,137.03x = 18,653,901,853.66
  5. Step 5: Solve for x
    x = 18,653,901,853.66/155,137.03
  6. Step 6: Final answer
    x = 120,241.45

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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.