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Finding the Fourth Proportional to 117,475.99, 162,119.29 and 66,488.72

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Solution

The fourth proportional to 117,475.99, 162,119.29 and 66,488.72 is: 91,755.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,475.99 : 162,119.29 = 66,488.72 : x
  2. Step 2: Convert to fraction form
    117,475.99/162,119.29 = 66,488.72/x
  3. Step 3: Cross multiply
    117,475.99x = 162,119.29 × 66,488.72
  4. Step 4: Simplify right side
    117,475.99x = 10,779,103,913.19
  5. Step 5: Solve for x
    x = 10,779,103,913.19/117,475.99
  6. Step 6: Final answer
    x = 91,755.80

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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.