Home / 211,623.84-291,995.28-122,148

Finding the Fourth Proportional to 211,623.84, 291,995.28 and 122,148

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Solution

The fourth proportional to 211,623.84, 291,995.28 and 122,148 is: 168,537.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,623.84 : 291,995.28 = 122,148 : x
  2. Step 2: Convert to fraction form
    211,623.84/291,995.28 = 122,148/x
  3. Step 3: Cross multiply
    211,623.84x = 291,995.28 × 122,148
  4. Step 4: Simplify right side
    211,623.84x = 35,666,639,461.44
  5. Step 5: Solve for x
    x = 35,666,639,461.44/211,623.84
  6. Step 6: Final answer
    x = 168,537.91

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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.