Home / 154,492.80-231,739.20-121,315.20

Finding the Fourth Proportional to 154,492.80, 231,739.20 and 121,315.20

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Solution

The fourth proportional to 154,492.80, 231,739.20 and 121,315.20 is: 181,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,492.80 : 231,739.20 = 121,315.20 : x
  2. Step 2: Convert to fraction form
    154,492.80/231,739.20 = 121,315.20/x
  3. Step 3: Cross multiply
    154,492.80x = 231,739.20 × 121,315.20
  4. Step 4: Simplify right side
    154,492.80x = 28,113,487,395.84
  5. Step 5: Solve for x
    x = 28,113,487,395.84/154,492.80
  6. Step 6: Final answer
    x = 181,972.80

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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.