Home / 207,439.92-311,159.88-118,631.12

Finding the Fourth Proportional to 207,439.92, 311,159.88 and 118,631.12

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Solution

The fourth proportional to 207,439.92, 311,159.88 and 118,631.12 is: 177,946.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,439.92 : 311,159.88 = 118,631.12 : x
  2. Step 2: Convert to fraction form
    207,439.92/311,159.88 = 118,631.12/x
  3. Step 3: Cross multiply
    207,439.92x = 311,159.88 × 118,631.12
  4. Step 4: Simplify right side
    207,439.92x = 36,913,243,507.67
  5. Step 5: Solve for x
    x = 36,913,243,507.67/207,439.92
  6. Step 6: Final answer
    x = 177,946.67

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Similar ratio
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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.