Home / 230,985.84-318,739.72-128,997.16

Finding the Fourth Proportional to 230,985.84, 318,739.72 and 128,997.16

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Solution

The fourth proportional to 230,985.84, 318,739.72 and 128,997.16 is: 178,004.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,985.84 : 318,739.72 = 128,997.16 : x
  2. Step 2: Convert to fraction form
    230,985.84/318,739.72 = 128,997.16/x
  3. Step 3: Cross multiply
    230,985.84x = 318,739.72 × 128,997.16
  4. Step 4: Simplify right side
    230,985.84x = 41,116,518,659.20
  5. Step 5: Solve for x
    x = 41,116,518,659.20/230,985.84
  6. Step 6: Final answer
    x = 178,004.50

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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.