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Finding the Fourth Proportional to 136,090.84, 203,699.48 and 72,752.60

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Solution

The fourth proportional to 136,090.84, 203,699.48 and 72,752.60 is: 108,895.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,090.84 : 203,699.48 = 72,752.60 : x
  2. Step 2: Convert to fraction form
    136,090.84/203,699.48 = 72,752.60/x
  3. Step 3: Cross multiply
    136,090.84x = 203,699.48 × 72,752.60
  4. Step 4: Simplify right side
    136,090.84x = 14,819,666,788.65
  5. Step 5: Solve for x
    x = 14,819,666,788.65/136,090.84
  6. Step 6: Final answer
    x = 108,895.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.