Home / 105,742.40-158,623.68-35,643.20

Finding the Fourth Proportional to 105,742.40, 158,623.68 and 35,643.20

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Solution

The fourth proportional to 105,742.40, 158,623.68 and 35,643.20 is: 53,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,742.40 : 158,623.68 = 35,643.20 : x
  2. Step 2: Convert to fraction form
    105,742.40/158,623.68 = 35,643.20/x
  3. Step 3: Cross multiply
    105,742.40x = 158,623.68 × 35,643.20
  4. Step 4: Simplify right side
    105,742.40x = 5,653,855,550.98
  5. Step 5: Solve for x
    x = 5,653,855,550.98/105,742.40
  6. Step 6: Final answer
    x = 53,468.20

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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.