Home / 99,102.58-136,761.65-53,780.57

Finding the Fourth Proportional to 99,102.58, 136,761.65 and 53,780.57

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Solution

The fourth proportional to 99,102.58, 136,761.65 and 53,780.57 is: 74,217.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,102.58 : 136,761.65 = 53,780.57 : x
  2. Step 2: Convert to fraction form
    99,102.58/136,761.65 = 53,780.57/x
  3. Step 3: Cross multiply
    99,102.58x = 136,761.65 × 53,780.57
  4. Step 4: Simplify right side
    99,102.58x = 7,355,119,491.14
  5. Step 5: Solve for x
    x = 7,355,119,491.14/99,102.58
  6. Step 6: Final answer
    x = 74,217.24

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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.