Home / 118,440.30-177,660.45-78,869.10

Finding the Fourth Proportional to 118,440.30, 177,660.45 and 78,869.10

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Solution

The fourth proportional to 118,440.30, 177,660.45 and 78,869.10 is: 118,303.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,440.30 : 177,660.45 = 78,869.10 : x
  2. Step 2: Convert to fraction form
    118,440.30/177,660.45 = 78,869.10/x
  3. Step 3: Cross multiply
    118,440.30x = 177,660.45 × 78,869.10
  4. Step 4: Simplify right side
    118,440.30x = 14,011,919,797.10
  5. Step 5: Solve for x
    x = 14,011,919,797.10/118,440.30
  6. Step 6: Final answer
    x = 118,303.65

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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.