Home / 128,927.10-178,323.75-114,023.10

Finding the Fourth Proportional to 128,927.10, 178,323.75 and 114,023.10

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Solution

The fourth proportional to 128,927.10, 178,323.75 and 114,023.10 is: 157,709.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,927.10 : 178,323.75 = 114,023.10 : x
  2. Step 2: Convert to fraction form
    128,927.10/178,323.75 = 114,023.10/x
  3. Step 3: Cross multiply
    128,927.10x = 178,323.75 × 114,023.10
  4. Step 4: Simplify right side
    128,927.10x = 20,333,026,778.63
  5. Step 5: Solve for x
    x = 20,333,026,778.63/128,927.10
  6. Step 6: Final answer
    x = 157,709.49

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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.