Home / 136,720.25-188,669.48-74,628.35

Finding the Fourth Proportional to 136,720.25, 188,669.48 and 74,628.35

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Solution

The fourth proportional to 136,720.25, 188,669.48 and 74,628.35 is: 102,984.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,720.25 : 188,669.48 = 74,628.35 : x
  2. Step 2: Convert to fraction form
    136,720.25/188,669.48 = 74,628.35/x
  3. Step 3: Cross multiply
    136,720.25x = 188,669.48 × 74,628.35
  4. Step 4: Simplify right side
    136,720.25x = 14,080,090,671.27
  5. Step 5: Solve for x
    x = 14,080,090,671.27/136,720.25
  6. Step 6: Final answer
    x = 102,984.68

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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.