Home / 98,753.31-136,292.09-64,790.51

Finding the Fourth Proportional to 98,753.31, 136,292.09 and 64,790.51

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Solution

The fourth proportional to 98,753.31, 136,292.09 and 64,790.51 is: 89,419.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,753.31 : 136,292.09 = 64,790.51 : x
  2. Step 2: Convert to fraction form
    98,753.31/136,292.09 = 64,790.51/x
  3. Step 3: Cross multiply
    98,753.31x = 136,292.09 × 64,790.51
  4. Step 4: Simplify right side
    98,753.31x = 8,830,433,014.65
  5. Step 5: Solve for x
    x = 8,830,433,014.65/98,753.31
  6. Step 6: Final answer
    x = 89,419.11

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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.