Home / 132,972.10-183,492.75-81,978.55

Finding the Fourth Proportional to 132,972.10, 183,492.75 and 81,978.55

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Solution

The fourth proportional to 132,972.10, 183,492.75 and 81,978.55 is: 113,125.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,972.10 : 183,492.75 = 81,978.55 : x
  2. Step 2: Convert to fraction form
    132,972.10/183,492.75 = 81,978.55/x
  3. Step 3: Cross multiply
    132,972.10x = 183,492.75 × 81,978.55
  4. Step 4: Simplify right side
    132,972.10x = 15,042,469,580.51
  5. Step 5: Solve for x
    x = 15,042,469,580.51/132,972.10
  6. Step 6: Final answer
    x = 113,125.01

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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.