Home / 105,109.92-157,650-30,236.40

Finding the Fourth Proportional to 105,109.92, 157,650 and 30,236.40

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Solution

The fourth proportional to 105,109.92, 157,650 and 30,236.40 is: 45,350.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,109.92 : 157,650 = 30,236.40 : x
  2. Step 2: Convert to fraction form
    105,109.92/157,650 = 30,236.40/x
  3. Step 3: Cross multiply
    105,109.92x = 157,650 × 30,236.40
  4. Step 4: Simplify right side
    105,109.92x = 4,766,768,460
  5. Step 5: Solve for x
    x = 4,766,768,460/105,109.92
  6. Step 6: Final answer
    x = 45,350.32

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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.