Home / 112,438.32-168,657.47-45,909.78

Finding the Fourth Proportional to 112,438.32, 168,657.47 and 45,909.78

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Solution

The fourth proportional to 112,438.32, 168,657.47 and 45,909.78 is: 68,864.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,438.32 : 168,657.47 = 45,909.78 : x
  2. Step 2: Convert to fraction form
    112,438.32/168,657.47 = 45,909.78/x
  3. Step 3: Cross multiply
    112,438.32x = 168,657.47 × 45,909.78
  4. Step 4: Simplify right side
    112,438.32x = 7,743,027,343.06
  5. Step 5: Solve for x
    x = 7,743,027,343.06/112,438.32
  6. Step 6: Final answer
    x = 68,864.67

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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.