Home / 98,727.36-136,195.50-64,720.86

Finding the Fourth Proportional to 98,727.36, 136,195.50 and 64,720.86

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Solution

The fourth proportional to 98,727.36, 136,195.50 and 64,720.86 is: 89,283.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,727.36 : 136,195.50 = 64,720.86 : x
  2. Step 2: Convert to fraction form
    98,727.36/136,195.50 = 64,720.86/x
  3. Step 3: Cross multiply
    98,727.36x = 136,195.50 × 64,720.86
  4. Step 4: Simplify right side
    98,727.36x = 8,814,689,888.13
  5. Step 5: Solve for x
    x = 8,814,689,888.13/98,727.36
  6. Step 6: Final answer
    x = 89,283.15

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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.