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Finding the Fourth Proportional to 98,257.39, 135,698.12 and 67,709.91

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Solution

The fourth proportional to 98,257.39, 135,698.12 and 67,709.91 is: 93,510.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,257.39 : 135,698.12 = 67,709.91 : x
  2. Step 2: Convert to fraction form
    98,257.39/135,698.12 = 67,709.91/x
  3. Step 3: Cross multiply
    98,257.39x = 135,698.12 × 67,709.91
  4. Step 4: Simplify right side
    98,257.39x = 9,188,107,492.37
  5. Step 5: Solve for x
    x = 9,188,107,492.37/98,257.39
  6. Step 6: Final answer
    x = 93,510.60

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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.