Home / 155,173.59-214,139.48-87,190.83

Finding the Fourth Proportional to 155,173.59, 214,139.48 and 87,190.83

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Solution

The fourth proportional to 155,173.59, 214,139.48 and 87,190.83 is: 120,323.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,173.59 : 214,139.48 = 87,190.83 : x
  2. Step 2: Convert to fraction form
    155,173.59/214,139.48 = 87,190.83/x
  3. Step 3: Cross multiply
    155,173.59x = 214,139.48 × 87,190.83
  4. Step 4: Simplify right side
    155,173.59x = 18,670,998,561.01
  5. Step 5: Solve for x
    x = 18,670,998,561.01/155,173.59
  6. Step 6: Final answer
    x = 120,323.30

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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.