Home / 131,289.32-181,179.78-74,699.48

Finding the Fourth Proportional to 131,289.32, 181,179.78 and 74,699.48

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Solution

The fourth proportional to 131,289.32, 181,179.78 and 74,699.48 is: 103,085.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,289.32 : 181,179.78 = 74,699.48 : x
  2. Step 2: Convert to fraction form
    131,289.32/181,179.78 = 74,699.48/x
  3. Step 3: Cross multiply
    131,289.32x = 181,179.78 × 74,699.48
  4. Step 4: Simplify right side
    131,289.32x = 13,534,035,352.51
  5. Step 5: Solve for x
    x = 13,534,035,352.51/131,289.32
  6. Step 6: Final answer
    x = 103,085.58

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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.