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Finding the Fourth Proportional to 98,065.98, 135,166.59 and 75,087.90

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Solution

The fourth proportional to 98,065.98, 135,166.59 and 75,087.90 is: 103,495.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,065.98 : 135,166.59 = 75,087.90 : x
  2. Step 2: Convert to fraction form
    98,065.98/135,166.59 = 75,087.90/x
  3. Step 3: Cross multiply
    98,065.98x = 135,166.59 × 75,087.90
  4. Step 4: Simplify right side
    98,065.98x = 10,149,375,393.26
  5. Step 5: Solve for x
    x = 10,149,375,393.26/98,065.98
  6. Step 6: Final answer
    x = 103,495.38

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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.