Home / 152,742.30-229,021.32-68,487.21

Finding the Fourth Proportional to 152,742.30, 229,021.32 and 68,487.21

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Solution

The fourth proportional to 152,742.30, 229,021.32 and 68,487.21 is: 102,689.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,742.30 : 229,021.32 = 68,487.21 : x
  2. Step 2: Convert to fraction form
    152,742.30/229,021.32 = 68,487.21/x
  3. Step 3: Cross multiply
    152,742.30x = 229,021.32 × 68,487.21
  4. Step 4: Simplify right side
    152,742.30x = 15,685,031,237.32
  5. Step 5: Solve for x
    x = 15,685,031,237.32/152,742.30
  6. Step 6: Final answer
    x = 102,689.51

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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.