Home / 202,688.80-279,699.60-112,039.36

Finding the Fourth Proportional to 202,688.80, 279,699.60 and 112,039.36

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Solution

The fourth proportional to 202,688.80, 279,699.60 and 112,039.36 is: 154,608.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,688.80 : 279,699.60 = 112,039.36 : x
  2. Step 2: Convert to fraction form
    202,688.80/279,699.60 = 112,039.36/x
  3. Step 3: Cross multiply
    202,688.80x = 279,699.60 × 112,039.36
  4. Step 4: Simplify right side
    202,688.80x = 31,337,364,176.26
  5. Step 5: Solve for x
    x = 31,337,364,176.26/202,688.80
  6. Step 6: Final answer
    x = 154,608.27

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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.