Home / 152,768.21-229,151.91-86,178.11

Finding the Fourth Proportional to 152,768.21, 229,151.91 and 86,178.11

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Solution

The fourth proportional to 152,768.21, 229,151.91 and 86,178.11 is: 129,266.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,768.21 : 229,151.91 = 86,178.11 : x
  2. Step 2: Convert to fraction form
    152,768.21/229,151.91 = 86,178.11/x
  3. Step 3: Cross multiply
    152,768.21x = 229,151.91 × 86,178.11
  4. Step 4: Simplify right side
    152,768.21x = 19,747,878,506.69
  5. Step 5: Solve for x
    x = 19,747,878,506.69/152,768.21
  6. Step 6: Final answer
    x = 129,266.94

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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.