Home / 99,126.90-148,690.62-69,676.47

Finding the Fourth Proportional to 99,126.90, 148,690.62 and 69,676.47

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Solution

The fourth proportional to 99,126.90, 148,690.62 and 69,676.47 is: 104,514.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,126.90 : 148,690.62 = 69,676.47 : x
  2. Step 2: Convert to fraction form
    99,126.90/148,690.62 = 69,676.47/x
  3. Step 3: Cross multiply
    99,126.90x = 148,690.62 × 69,676.47
  4. Step 4: Simplify right side
    99,126.90x = 10,360,237,523.71
  5. Step 5: Solve for x
    x = 10,360,237,523.71/99,126.90
  6. Step 6: Final answer
    x = 104,514.89

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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.