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Finding the Fourth Proportional to 155,999.34, 215,410.32 and 98,739.68

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Solution

The fourth proportional to 155,999.34, 215,410.32 and 98,739.68 is: 136,343.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,999.34 : 215,410.32 = 98,739.68 : x
  2. Step 2: Convert to fraction form
    155,999.34/215,410.32 = 98,739.68/x
  3. Step 3: Cross multiply
    155,999.34x = 215,410.32 × 98,739.68
  4. Step 4: Simplify right side
    155,999.34x = 21,269,546,065.50
  5. Step 5: Solve for x
    x = 21,269,546,065.50/155,999.34
  6. Step 6: Final answer
    x = 136,343.82

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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.