Home / 99,698.07-137,579.52-54,986.07

Finding the Fourth Proportional to 99,698.07, 137,579.52 and 54,986.07

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Solution

The fourth proportional to 99,698.07, 137,579.52 and 54,986.07 is: 75,878.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,698.07 : 137,579.52 = 54,986.07 : x
  2. Step 2: Convert to fraction form
    99,698.07/137,579.52 = 54,986.07/x
  3. Step 3: Cross multiply
    99,698.07x = 137,579.52 × 54,986.07
  4. Step 4: Simplify right side
    99,698.07x = 7,564,957,117.29
  5. Step 5: Solve for x
    x = 7,564,957,117.29/99,698.07
  6. Step 6: Final answer
    x = 75,878.67

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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.