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Finding the Fourth Proportional to 98,345.75, 147,388.01 and 39,148.92

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Solution

The fourth proportional to 98,345.75, 147,388.01 and 39,148.92 is: 58,671.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,345.75 : 147,388.01 = 39,148.92 : x
  2. Step 2: Convert to fraction form
    98,345.75/147,388.01 = 39,148.92/x
  3. Step 3: Cross multiply
    98,345.75x = 147,388.01 × 39,148.92
  4. Step 4: Simplify right side
    98,345.75x = 5,770,081,216.70
  5. Step 5: Solve for x
    x = 5,770,081,216.70/98,345.75
  6. Step 6: Final answer
    x = 58,671.39

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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.