Home / 205,211.85-283,142.29-120,312.51

Finding the Fourth Proportional to 205,211.85, 283,142.29 and 120,312.51

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Solution

The fourth proportional to 205,211.85, 283,142.29 and 120,312.51 is: 166,001.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,211.85 : 283,142.29 = 120,312.51 : x
  2. Step 2: Convert to fraction form
    205,211.85/283,142.29 = 120,312.51/x
  3. Step 3: Cross multiply
    205,211.85x = 283,142.29 × 120,312.51
  4. Step 4: Simplify right side
    205,211.85x = 34,065,559,597.05
  5. Step 5: Solve for x
    x = 34,065,559,597.05/205,211.85
  6. Step 6: Final answer
    x = 166,001.91

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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.