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Finding the Fourth Proportional to 155,610, 214,780.68 and 88,580.88

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Solution

The fourth proportional to 155,610, 214,780.68 and 88,580.88 is: 122,263.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,610 : 214,780.68 = 88,580.88 : x
  2. Step 2: Convert to fraction form
    155,610/214,780.68 = 88,580.88/x
  3. Step 3: Cross multiply
    155,610x = 214,780.68 × 88,580.88
  4. Step 4: Simplify right side
    155,610x = 19,025,461,641.40
  5. Step 5: Solve for x
    x = 19,025,461,641.40/155,610
  6. Step 6: Final answer
    x = 122,263.75

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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.