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Finding the Fourth Proportional to 135,710.20, 187,281.20 and 75,284.80

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Solution

The fourth proportional to 135,710.20, 187,281.20 and 75,284.80 is: 103,893.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,710.20 : 187,281.20 = 75,284.80 : x
  2. Step 2: Convert to fraction form
    135,710.20/187,281.20 = 75,284.80/x
  3. Step 3: Cross multiply
    135,710.20x = 187,281.20 × 75,284.80
  4. Step 4: Simplify right side
    135,710.20x = 14,099,427,685.76
  5. Step 5: Solve for x
    x = 14,099,427,685.76/135,710.20
  6. Step 6: Final answer
    x = 103,893.65

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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.