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Finding the Fourth Proportional to 132,980.54, 183,509.16 and 72,552.38

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Solution

The fourth proportional to 132,980.54, 183,509.16 and 72,552.38 is: 100,120.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,980.54 : 183,509.16 = 72,552.38 : x
  2. Step 2: Convert to fraction form
    132,980.54/183,509.16 = 72,552.38/x
  3. Step 3: Cross multiply
    132,980.54x = 183,509.16 × 72,552.38
  4. Step 4: Simplify right side
    132,980.54x = 13,314,026,309.80
  5. Step 5: Solve for x
    x = 13,314,026,309.80/132,980.54
  6. Step 6: Final answer
    x = 100,120.11

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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.