Home / 143,852.36-215,840.79-77,214.68

Finding the Fourth Proportional to 143,852.36, 215,840.79 and 77,214.68

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Solution

The fourth proportional to 143,852.36, 215,840.79 and 77,214.68 is: 115,855.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,852.36 : 215,840.79 = 77,214.68 : x
  2. Step 2: Convert to fraction form
    143,852.36/215,840.79 = 77,214.68/x
  3. Step 3: Cross multiply
    143,852.36x = 215,840.79 × 77,214.68
  4. Step 4: Simplify right side
    143,852.36x = 16,666,076,258.56
  5. Step 5: Solve for x
    x = 16,666,076,258.56/143,852.36
  6. Step 6: Final answer
    x = 115,855.42

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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.