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Finding the Fourth Proportional to 98,473.50, 146,941.74 and 87,870.60

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Solution

The fourth proportional to 98,473.50, 146,941.74 and 87,870.60 is: 131,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,473.50 : 146,941.74 = 87,870.60 : x
  2. Step 2: Convert to fraction form
    98,473.50/146,941.74 = 87,870.60/x
  3. Step 3: Cross multiply
    98,473.50x = 146,941.74 × 87,870.60
  4. Step 4: Simplify right side
    98,473.50x = 12,911,858,858.84
  5. Step 5: Solve for x
    x = 12,911,858,858.84/98,473.50
  6. Step 6: Final answer
    x = 131,120.14

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.