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Finding the Fourth Proportional to 98,006.20, 146,858.10 and 72,928.60

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Solution

The fourth proportional to 98,006.20, 146,858.10 and 72,928.60 is: 109,280.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,006.20 : 146,858.10 = 72,928.60 : x
  2. Step 2: Convert to fraction form
    98,006.20/146,858.10 = 72,928.60/x
  3. Step 3: Cross multiply
    98,006.20x = 146,858.10 × 72,928.60
  4. Step 4: Simplify right side
    98,006.20x = 10,710,155,631.66
  5. Step 5: Solve for x
    x = 10,710,155,631.66/98,006.20
  6. Step 6: Final answer
    x = 109,280.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.