Home / 99,140.74-136,867.53-76,429.96

Finding the Fourth Proportional to 99,140.74, 136,867.53 and 76,429.96

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Solution

The fourth proportional to 99,140.74, 136,867.53 and 76,429.96 is: 105,514.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,140.74 : 136,867.53 = 76,429.96 : x
  2. Step 2: Convert to fraction form
    99,140.74/136,867.53 = 76,429.96/x
  3. Step 3: Cross multiply
    99,140.74x = 136,867.53 × 76,429.96
  4. Step 4: Simplify right side
    99,140.74x = 10,460,779,843.20
  5. Step 5: Solve for x
    x = 10,460,779,843.20/99,140.74
  6. Step 6: Final answer
    x = 105,514.44

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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.