Home / 265,129.21-397,756.10-87,636.23

Finding the Fourth Proportional to 265,129.21, 397,756.10 and 87,636.23

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Solution

The fourth proportional to 265,129.21, 397,756.10 and 87,636.23 is: 131,474.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,129.21 : 397,756.10 = 87,636.23 : x
  2. Step 2: Convert to fraction form
    265,129.21/397,756.10 = 87,636.23/x
  3. Step 3: Cross multiply
    265,129.21x = 397,756.10 × 87,636.23
  4. Step 4: Simplify right side
    265,129.21x = 34,857,845,063.50
  5. Step 5: Solve for x
    x = 34,857,845,063.50/265,129.21
  6. Step 6: Final answer
    x = 131,474.93

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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.