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Finding the Fourth Proportional to 144,090.60, 216,135.90 and 91,537.80

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Solution

The fourth proportional to 144,090.60, 216,135.90 and 91,537.80 is: 137,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,090.60 : 216,135.90 = 91,537.80 : x
  2. Step 2: Convert to fraction form
    144,090.60/216,135.90 = 91,537.80/x
  3. Step 3: Cross multiply
    144,090.60x = 216,135.90 × 91,537.80
  4. Step 4: Simplify right side
    144,090.60x = 19,784,604,787.02
  5. Step 5: Solve for x
    x = 19,784,604,787.02/144,090.60
  6. Step 6: Final answer
    x = 137,306.70

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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.