Home / 155,291.45-214,304.40-87,304.64

Finding the Fourth Proportional to 155,291.45, 214,304.40 and 87,304.64

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Solution

The fourth proportional to 155,291.45, 214,304.40 and 87,304.64 is: 120,481.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,291.45 : 214,304.40 = 87,304.64 : x
  2. Step 2: Convert to fraction form
    155,291.45/214,304.40 = 87,304.64/x
  3. Step 3: Cross multiply
    155,291.45x = 214,304.40 × 87,304.64
  4. Step 4: Simplify right side
    155,291.45x = 18,709,767,420.89
  5. Step 5: Solve for x
    x = 18,709,767,420.89/155,291.45
  6. Step 6: Final answer
    x = 120,481.64

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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.