Home / 131,908.48-181,987.44-74,540.32

Finding the Fourth Proportional to 131,908.48, 181,987.44 and 74,540.32

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Solution

The fourth proportional to 131,908.48, 181,987.44 and 74,540.32 is: 102,839.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,908.48 : 181,987.44 = 74,540.32 : x
  2. Step 2: Convert to fraction form
    131,908.48/181,987.44 = 74,540.32/x
  3. Step 3: Cross multiply
    131,908.48x = 181,987.44 × 74,540.32
  4. Step 4: Simplify right side
    131,908.48x = 13,565,402,013.58
  5. Step 5: Solve for x
    x = 13,565,402,013.58/131,908.48
  6. Step 6: Final answer
    x = 102,839.50

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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.