Home / 154,247.10-212,798.22-100,512.50

Finding the Fourth Proportional to 154,247.10, 212,798.22 and 100,512.50

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Solution

The fourth proportional to 154,247.10, 212,798.22 and 100,512.50 is: 138,666.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,247.10 : 212,798.22 = 100,512.50 : x
  2. Step 2: Convert to fraction form
    154,247.10/212,798.22 = 100,512.50/x
  3. Step 3: Cross multiply
    154,247.10x = 212,798.22 × 100,512.50
  4. Step 4: Simplify right side
    154,247.10x = 21,388,881,087.75
  5. Step 5: Solve for x
    x = 21,388,881,087.75/154,247.10
  6. Step 6: Final answer
    x = 138,666.34

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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.