Home / 155,411.56-214,467.62-87,428.58

Finding the Fourth Proportional to 155,411.56, 214,467.62 and 87,428.58

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Solution

The fourth proportional to 155,411.56, 214,467.62 and 87,428.58 is: 120,651.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,411.56 : 214,467.62 = 87,428.58 : x
  2. Step 2: Convert to fraction form
    155,411.56/214,467.62 = 87,428.58/x
  3. Step 3: Cross multiply
    155,411.56x = 214,467.62 × 87,428.58
  4. Step 4: Simplify right side
    155,411.56x = 18,750,599,472.58
  5. Step 5: Solve for x
    x = 18,750,599,472.58/155,411.56
  6. Step 6: Final answer
    x = 120,651.25

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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.