Home / 98,682.09-136,196.65-64,788.89

Finding the Fourth Proportional to 98,682.09, 136,196.65 and 64,788.89

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Solution

The fourth proportional to 98,682.09, 136,196.65 and 64,788.89 is: 89,418.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,682.09 : 136,196.65 = 64,788.89 : x
  2. Step 2: Convert to fraction form
    98,682.09/136,196.65 = 64,788.89/x
  3. Step 3: Cross multiply
    98,682.09x = 136,196.65 × 64,788.89
  4. Step 4: Simplify right side
    98,682.09x = 8,824,029,953.74
  5. Step 5: Solve for x
    x = 8,824,029,953.74/98,682.09
  6. Step 6: Final answer
    x = 89,418.76

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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.