Home / 155,173.48-214,139.46-87,190.36

Finding the Fourth Proportional to 155,173.48, 214,139.46 and 87,190.36

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Solution

The fourth proportional to 155,173.48, 214,139.46 and 87,190.36 is: 120,322.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,173.48 : 214,139.46 = 87,190.36 : x
  2. Step 2: Convert to fraction form
    155,173.48/214,139.46 = 87,190.36/x
  3. Step 3: Cross multiply
    155,173.48x = 214,139.46 × 87,190.36
  4. Step 4: Simplify right side
    155,173.48x = 18,670,896,607.61
  5. Step 5: Solve for x
    x = 18,670,896,607.61/155,173.48
  6. Step 6: Final answer
    x = 120,322.73

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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.