Home / 210,236,703.72-290,117,870.46-120,921,857.19

Finding the Fourth Proportional to 210,236,703.72, 290,117,870.46 and 120,921,857.19

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Solution

The fourth proportional to 210,236,703.72, 290,117,870.46 and 120,921,857.19 is: 166,867,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,236,703.72 : 290,117,870.46 = 120,921,857.19 : x
  2. Step 2: Convert to fraction form
    210,236,703.72/290,117,870.46 = 120,921,857.19/x
  3. Step 3: Cross multiply
    210,236,703.72x = 290,117,870.46 × 120,921,857.19
  4. Step 4: Simplify right side
    210,236,703.72x = 35,081,591,700,031,036
  5. Step 5: Solve for x
    x = 35,081,591,700,031,036/210,236,703.72
  6. Step 6: Final answer
    x = 166,867,112.54

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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.