Home / 98,083.71-135,320.69-64,111.80

Finding the Fourth Proportional to 98,083.71, 135,320.69 and 64,111.80

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Solution

The fourth proportional to 98,083.71, 135,320.69 and 64,111.80 is: 88,451.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,083.71 : 135,320.69 = 64,111.80 : x
  2. Step 2: Convert to fraction form
    98,083.71/135,320.69 = 64,111.80/x
  3. Step 3: Cross multiply
    98,083.71x = 135,320.69 × 64,111.80
  4. Step 4: Simplify right side
    98,083.71x = 8,675,653,680.87
  5. Step 5: Solve for x
    x = 8,675,653,680.87/98,083.71
  6. Step 6: Final answer
    x = 88,451.52

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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.