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Finding the Fourth Proportional to 118,340.91, 177,066.68 and 70,780.95

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Solution

The fourth proportional to 118,340.91, 177,066.68 and 70,780.95 is: 105,905.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,340.91 : 177,066.68 = 70,780.95 : x
  2. Step 2: Convert to fraction form
    118,340.91/177,066.68 = 70,780.95/x
  3. Step 3: Cross multiply
    118,340.91x = 177,066.68 × 70,780.95
  4. Step 4: Simplify right side
    118,340.91x = 12,532,947,469.84
  5. Step 5: Solve for x
    x = 12,532,947,469.84/118,340.91
  6. Step 6: Final answer
    x = 105,905.45

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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.