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Finding the Fourth Proportional to 131,301, 181,203.48 and 74,712.24

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Solution

The fourth proportional to 131,301, 181,203.48 and 74,712.24 is: 103,107.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,301 : 181,203.48 = 74,712.24 : x
  2. Step 2: Convert to fraction form
    131,301/181,203.48 = 74,712.24/x
  3. Step 3: Cross multiply
    131,301x = 181,203.48 × 74,712.24
  4. Step 4: Simplify right side
    131,301x = 13,538,117,886.60
  5. Step 5: Solve for x
    x = 13,538,117,886.60/131,301
  6. Step 6: Final answer
    x = 103,107.50

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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.