Home / 145,869.20-218,803.80-123,999.20

Finding the Fourth Proportional to 145,869.20, 218,803.80 and 123,999.20

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Solution

The fourth proportional to 145,869.20, 218,803.80 and 123,999.20 is: 185,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,869.20 : 218,803.80 = 123,999.20 : x
  2. Step 2: Convert to fraction form
    145,869.20/218,803.80 = 123,999.20/x
  3. Step 3: Cross multiply
    145,869.20x = 218,803.80 × 123,999.20
  4. Step 4: Simplify right side
    145,869.20x = 27,131,496,156.96
  5. Step 5: Solve for x
    x = 27,131,496,156.96/145,869.20
  6. Step 6: Final answer
    x = 185,998.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.