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Finding the Fourth Proportional to 114,986.70, 172,488.15 and 65,090.70

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Solution

The fourth proportional to 114,986.70, 172,488.15 and 65,090.70 is: 97,640.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,986.70 : 172,488.15 = 65,090.70 : x
  2. Step 2: Convert to fraction form
    114,986.70/172,488.15 = 65,090.70/x
  3. Step 3: Cross multiply
    114,986.70x = 172,488.15 × 65,090.70
  4. Step 4: Simplify right side
    114,986.70x = 11,227,374,425.21
  5. Step 5: Solve for x
    x = 11,227,374,425.21/114,986.70
  6. Step 6: Final answer
    x = 97,640.64

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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.