Home / 156,339.20-215,668.86-98,881.75

Finding the Fourth Proportional to 156,339.20, 215,668.86 and 98,881.75

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Solution

The fourth proportional to 156,339.20, 215,668.86 and 98,881.75 is: 136,406.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,339.20 : 215,668.86 = 98,881.75 : x
  2. Step 2: Convert to fraction form
    156,339.20/215,668.86 = 98,881.75/x
  3. Step 3: Cross multiply
    156,339.20x = 215,668.86 × 98,881.75
  4. Step 4: Simplify right side
    156,339.20x = 21,325,713,539.16
  5. Step 5: Solve for x
    x = 21,325,713,539.16/156,339.20
  6. Step 6: Final answer
    x = 136,406.70

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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.