Home / 105,639.36-158,407.68-39,110.88

Finding the Fourth Proportional to 105,639.36, 158,407.68 and 39,110.88

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Solution

The fourth proportional to 105,639.36, 158,407.68 and 39,110.88 is: 58,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,639.36 : 158,407.68 = 39,110.88 : x
  2. Step 2: Convert to fraction form
    105,639.36/158,407.68 = 39,110.88/x
  3. Step 3: Cross multiply
    105,639.36x = 158,407.68 × 39,110.88
  4. Step 4: Simplify right side
    105,639.36x = 6,195,463,763.56
  5. Step 5: Solve for x
    x = 6,195,463,763.56/105,639.36
  6. Step 6: Final answer
    x = 58,647.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.