Home / 211,126.55-316,699.30-68,980.49

Finding the Fourth Proportional to 211,126.55, 316,699.30 and 68,980.49

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Solution

The fourth proportional to 211,126.55, 316,699.30 and 68,980.49 is: 103,473.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,126.55 : 316,699.30 = 68,980.49 : x
  2. Step 2: Convert to fraction form
    211,126.55/316,699.30 = 68,980.49/x
  3. Step 3: Cross multiply
    211,126.55x = 316,699.30 × 68,980.49
  4. Step 4: Simplify right side
    211,126.55x = 21,846,071,550.79
  5. Step 5: Solve for x
    x = 21,846,071,550.79/211,126.55
  6. Step 6: Final answer
    x = 103,473.82

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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.