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Finding the Fourth Proportional to 98,461.50, 146,923.90 and 87,858.60

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Solution

The fourth proportional to 98,461.50, 146,923.90 and 87,858.60 is: 131,102.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,461.50 : 146,923.90 = 87,858.60 : x
  2. Step 2: Convert to fraction form
    98,461.50/146,923.90 = 87,858.60/x
  3. Step 3: Cross multiply
    98,461.50x = 146,923.90 × 87,858.60
  4. Step 4: Simplify right side
    98,461.50x = 12,908,528,160.54
  5. Step 5: Solve for x
    x = 12,908,528,160.54/98,461.50
  6. Step 6: Final answer
    x = 131,102.29

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1.5x scale

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.