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Finding the Fourth Proportional to 117,412.00, 161,921.63 and 99,300.67

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Solution

The fourth proportional to 117,412.00, 161,921.63 and 99,300.67 is: 136,944.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,412.00 : 161,921.63 = 99,300.67 : x
  2. Step 2: Convert to fraction form
    117,412.00/161,921.63 = 99,300.67/x
  3. Step 3: Cross multiply
    117,412.00x = 161,921.63 × 99,300.67
  4. Step 4: Simplify right side
    117,412.00x = 16,078,926,189.94
  5. Step 5: Solve for x
    x = 16,078,926,189.94/117,412.00
  6. Step 6: Final answer
    x = 136,944.49

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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.