Home / 98,919.72-136,509.30-54,207.72

Finding the Fourth Proportional to 98,919.72, 136,509.30 and 54,207.72

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Solution

The fourth proportional to 98,919.72, 136,509.30 and 54,207.72 is: 74,806.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,919.72 : 136,509.30 = 54,207.72 : x
  2. Step 2: Convert to fraction form
    98,919.72/136,509.30 = 54,207.72/x
  3. Step 3: Cross multiply
    98,919.72x = 136,509.30 × 54,207.72
  4. Step 4: Simplify right side
    98,919.72x = 7,399,857,911.80
  5. Step 5: Solve for x
    x = 7,399,857,911.80/98,919.72
  6. Step 6: Final answer
    x = 74,806.70

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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.