Home / 186,631.20-279,946.80-115,772.40

Finding the Fourth Proportional to 186,631.20, 279,946.80 and 115,772.40

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Solution

The fourth proportional to 186,631.20, 279,946.80 and 115,772.40 is: 173,658.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,631.20 : 279,946.80 = 115,772.40 : x
  2. Step 2: Convert to fraction form
    186,631.20/279,946.80 = 115,772.40/x
  3. Step 3: Cross multiply
    186,631.20x = 279,946.80 × 115,772.40
  4. Step 4: Simplify right side
    186,631.20x = 32,410,112,908.32
  5. Step 5: Solve for x
    x = 32,410,112,908.32/186,631.20
  6. Step 6: Final answer
    x = 173,658.60

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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.