Home / 145,429.21-200,699.94-81,771.11

Finding the Fourth Proportional to 145,429.21, 200,699.94 and 81,771.11

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Solution

The fourth proportional to 145,429.21, 200,699.94 and 81,771.11 is: 112,848.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,429.21 : 200,699.94 = 81,771.11 : x
  2. Step 2: Convert to fraction form
    145,429.21/200,699.94 = 81,771.11/x
  3. Step 3: Cross multiply
    145,429.21x = 200,699.94 × 81,771.11
  4. Step 4: Simplify right side
    145,429.21x = 16,411,456,870.73
  5. Step 5: Solve for x
    x = 16,411,456,870.73/145,429.21
  6. Step 6: Final answer
    x = 112,848.42

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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.