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Finding the Fourth Proportional to 155,678, 214,835.88 and 88,610

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Solution

The fourth proportional to 155,678, 214,835.88 and 88,610 is: 122,281.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,678 : 214,835.88 = 88,610 : x
  2. Step 2: Convert to fraction form
    155,678/214,835.88 = 88,610/x
  3. Step 3: Cross multiply
    155,678x = 214,835.88 × 88,610
  4. Step 4: Simplify right side
    155,678x = 19,036,607,326.80
  5. Step 5: Solve for x
    x = 19,036,607,326.80/155,678
  6. Step 6: Final answer
    x = 122,281.94

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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.