Home / 102,515.36-141,493.92-64,782.40

Finding the Fourth Proportional to 102,515.36, 141,493.92 and 64,782.40

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Solution

The fourth proportional to 102,515.36, 141,493.92 and 64,782.40 is: 89,414.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,515.36 : 141,493.92 = 64,782.40 : x
  2. Step 2: Convert to fraction form
    102,515.36/141,493.92 = 64,782.40/x
  3. Step 3: Cross multiply
    102,515.36x = 141,493.92 × 64,782.40
  4. Step 4: Simplify right side
    102,515.36x = 9,166,315,723.01
  5. Step 5: Solve for x
    x = 9,166,315,723.01/102,515.36
  6. Step 6: Final answer
    x = 89,414.07

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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.