Home / 152,939.65-229,173.68-81,871.72

Finding the Fourth Proportional to 152,939.65, 229,173.68 and 81,871.72

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Solution

The fourth proportional to 152,939.65, 229,173.68 and 81,871.72 is: 122,681.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,939.65 : 229,173.68 = 81,871.72 : x
  2. Step 2: Convert to fraction form
    152,939.65/229,173.68 = 81,871.72/x
  3. Step 3: Cross multiply
    152,939.65x = 229,173.68 × 81,871.72
  4. Step 4: Simplify right side
    152,939.65x = 18,762,843,360.33
  5. Step 5: Solve for x
    x = 18,762,843,360.33/152,939.65
  6. Step 6: Final answer
    x = 122,681.35

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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.