Home / 99,819.92-137,751.48-57,386.72

Finding the Fourth Proportional to 99,819.92, 137,751.48 and 57,386.72

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Solution

The fourth proportional to 99,819.92, 137,751.48 and 57,386.72 is: 79,193.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,819.92 : 137,751.48 = 57,386.72 : x
  2. Step 2: Convert to fraction form
    99,819.92/137,751.48 = 57,386.72/x
  3. Step 3: Cross multiply
    99,819.92x = 137,751.48 × 57,386.72
  4. Step 4: Simplify right side
    99,819.92x = 7,905,105,612.35
  5. Step 5: Solve for x
    x = 7,905,105,612.35/99,819.92
  6. Step 6: Final answer
    x = 79,193.67

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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.