Home / 128,984.48-193,485.68-54,076.32

Finding the Fourth Proportional to 128,984.48, 193,485.68 and 54,076.32

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Solution

The fourth proportional to 128,984.48, 193,485.68 and 54,076.32 is: 81,118.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,984.48 : 193,485.68 = 54,076.32 : x
  2. Step 2: Convert to fraction form
    128,984.48/193,485.68 = 54,076.32/x
  3. Step 3: Cross multiply
    128,984.48x = 193,485.68 × 54,076.32
  4. Step 4: Simplify right side
    128,984.48x = 10,462,993,547.10
  5. Step 5: Solve for x
    x = 10,462,993,547.10/128,984.48
  6. Step 6: Final answer
    x = 81,118.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.