Home / 143,356.88-214,968.12-76,784.72

Finding the Fourth Proportional to 143,356.88, 214,968.12 and 76,784.72

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Solution

The fourth proportional to 143,356.88, 214,968.12 and 76,784.72 is: 115,141.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,356.88 : 214,968.12 = 76,784.72 : x
  2. Step 2: Convert to fraction form
    143,356.88/214,968.12 = 76,784.72/x
  3. Step 3: Cross multiply
    143,356.88x = 214,968.12 × 76,784.72
  4. Step 4: Simplify right side
    143,356.88x = 16,506,266,903.13
  5. Step 5: Solve for x
    x = 16,506,266,903.13/143,356.88
  6. Step 6: Final answer
    x = 115,141.09

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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.