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Finding the Fourth Proportional to 105,532.74, 145,657.81 and 67,283.49

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Solution

The fourth proportional to 105,532.74, 145,657.81 and 67,283.49 is: 92,865.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,532.74 : 145,657.81 = 67,283.49 : x
  2. Step 2: Convert to fraction form
    105,532.74/145,657.81 = 67,283.49/x
  3. Step 3: Cross multiply
    105,532.74x = 145,657.81 × 67,283.49
  4. Step 4: Simplify right side
    105,532.74x = 9,800,366,432.88
  5. Step 5: Solve for x
    x = 9,800,366,432.88/105,532.74
  6. Step 6: Final answer
    x = 92,865.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.