Home / 154,129,021.65-212,492,288.86-122,444,321.51

Finding the Fourth Proportional to 154,129,021.65, 212,492,288.86 and 122,444,321.51

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Solution

The fourth proportional to 154,129,021.65, 212,492,288.86 and 122,444,321.51 is: 168,809,701.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,129,021.65 : 212,492,288.86 = 122,444,321.51 : x
  2. Step 2: Convert to fraction form
    154,129,021.65/212,492,288.86 = 122,444,321.51/x
  3. Step 3: Cross multiply
    154,129,021.65x = 212,492,288.86 × 122,444,321.51
  4. Step 4: Simplify right side
    154,129,021.65x = 26,018,474,135,794,752
  5. Step 5: Solve for x
    x = 26,018,474,135,794,752/154,129,021.65
  6. Step 6: Final answer
    x = 168,809,701.49

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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.