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Finding the Fourth Proportional to 118,364.20, 177,315.90 and 71,477.80

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Solution

The fourth proportional to 118,364.20, 177,315.90 and 71,477.80 is: 107,077.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,364.20 : 177,315.90 = 71,477.80 : x
  2. Step 2: Convert to fraction form
    118,364.20/177,315.90 = 71,477.80/x
  3. Step 3: Cross multiply
    118,364.20x = 177,315.90 × 71,477.80
  4. Step 4: Simplify right side
    118,364.20x = 12,674,150,437.02
  5. Step 5: Solve for x
    x = 12,674,150,437.02/118,364.20
  6. Step 6: Final answer
    x = 107,077.57

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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.