Home / 153,942.32-212,380.44-103,674.80

Finding the Fourth Proportional to 153,942.32, 212,380.44 and 103,674.80

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Solution

The fourth proportional to 153,942.32, 212,380.44 and 103,674.80 is: 143,030.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,942.32 : 212,380.44 = 103,674.80 : x
  2. Step 2: Convert to fraction form
    153,942.32/212,380.44 = 103,674.80/x
  3. Step 3: Cross multiply
    153,942.32x = 212,380.44 × 103,674.80
  4. Step 4: Simplify right side
    153,942.32x = 22,018,499,640.91
  5. Step 5: Solve for x
    x = 22,018,499,640.91/153,942.32
  6. Step 6: Final answer
    x = 143,030.84

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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.