Home / 156,339.18-215,634.15-98,987.85

Finding the Fourth Proportional to 156,339.18, 215,634.15 and 98,987.85

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Solution

The fourth proportional to 156,339.18, 215,634.15 and 98,987.85 is: 136,531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,339.18 : 215,634.15 = 98,987.85 : x
  2. Step 2: Convert to fraction form
    156,339.18/215,634.15 = 98,987.85/x
  3. Step 3: Cross multiply
    156,339.18x = 215,634.15 × 98,987.85
  4. Step 4: Simplify right side
    156,339.18x = 21,345,160,895.08
  5. Step 5: Solve for x
    x = 21,345,160,895.08/156,339.18
  6. Step 6: Final answer
    x = 136,531.10

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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.