Home / 103,635.36-143,013.54-58,315.92

Finding the Fourth Proportional to 103,635.36, 143,013.54 and 58,315.92

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Solution

The fourth proportional to 103,635.36, 143,013.54 and 58,315.92 is: 80,474.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,635.36 : 143,013.54 = 58,315.92 : x
  2. Step 2: Convert to fraction form
    103,635.36/143,013.54 = 58,315.92/x
  3. Step 3: Cross multiply
    103,635.36x = 143,013.54 × 58,315.92
  4. Step 4: Simplify right side
    103,635.36x = 8,339,966,157.56
  5. Step 5: Solve for x
    x = 8,339,966,157.56/103,635.36
  6. Step 6: Final answer
    x = 80,474.14

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1.5x scale

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.