Home / 99,741.78-137,623.49-63,457.64

Finding the Fourth Proportional to 99,741.78, 137,623.49 and 63,457.64

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Solution

The fourth proportional to 99,741.78, 137,623.49 and 63,457.64 is: 87,558.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,741.78 : 137,623.49 = 63,457.64 : x
  2. Step 2: Convert to fraction form
    99,741.78/137,623.49 = 63,457.64/x
  3. Step 3: Cross multiply
    99,741.78x = 137,623.49 × 63,457.64
  4. Step 4: Simplify right side
    99,741.78x = 8,733,260,878.56
  5. Step 5: Solve for x
    x = 8,733,260,878.56/99,741.78
  6. Step 6: Final answer
    x = 87,558.70

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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.