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Finding the Fourth Proportional to 155,525, 214,643.40 and 87,567.44

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Solution

The fourth proportional to 155,525, 214,643.40 and 87,567.44 is: 120,853.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,525 : 214,643.40 = 87,567.44 : x
  2. Step 2: Convert to fraction form
    155,525/214,643.40 = 87,567.44/x
  3. Step 3: Cross multiply
    155,525x = 214,643.40 × 87,567.44
  4. Step 4: Simplify right side
    155,525x = 18,795,773,050.90
  5. Step 5: Solve for x
    x = 18,795,773,050.90/155,525
  6. Step 6: Final answer
    x = 120,853.71

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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.