Home / 210,669.80-290,702.25-120,006.77

Finding the Fourth Proportional to 210,669.80, 290,702.25 and 120,006.77

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Solution

The fourth proportional to 210,669.80, 290,702.25 and 120,006.77 is: 165,596.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,669.80 : 290,702.25 = 120,006.77 : x
  2. Step 2: Convert to fraction form
    210,669.80/290,702.25 = 120,006.77/x
  3. Step 3: Cross multiply
    210,669.80x = 290,702.25 × 120,006.77
  4. Step 4: Simplify right side
    210,669.80x = 34,886,236,600.72
  5. Step 5: Solve for x
    x = 34,886,236,600.72/210,669.80
  6. Step 6: Final answer
    x = 165,596.77

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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.