Home / 81,346.23-112,162.20-65,200.62

Finding the Fourth Proportional to 81,346.23, 112,162.20 and 65,200.62

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Solution

The fourth proportional to 81,346.23, 112,162.20 and 65,200.62 is: 89,900.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,346.23 : 112,162.20 = 65,200.62 : x
  2. Step 2: Convert to fraction form
    81,346.23/112,162.20 = 65,200.62/x
  3. Step 3: Cross multiply
    81,346.23x = 112,162.20 × 65,200.62
  4. Step 4: Simplify right side
    81,346.23x = 7,313,044,980.56
  5. Step 5: Solve for x
    x = 7,313,044,980.56/81,346.23
  6. Step 6: Final answer
    x = 89,900.23

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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.