Home / 131,021.04-180,809.64-74,435.52

Finding the Fourth Proportional to 131,021.04, 180,809.64 and 74,435.52

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Solution

The fourth proportional to 131,021.04, 180,809.64 and 74,435.52 is: 102,721.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.04 : 180,809.64 = 74,435.52 : x
  2. Step 2: Convert to fraction form
    131,021.04/180,809.64 = 74,435.52/x
  3. Step 3: Cross multiply
    131,021.04x = 180,809.64 × 74,435.52
  4. Step 4: Simplify right side
    131,021.04x = 13,458,659,574.41
  5. Step 5: Solve for x
    x = 13,458,659,574.41/131,021.04
  6. Step 6: Final answer
    x = 102,721.36

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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.