Home / 156,435.46-215,801.38-98,977.88

Finding the Fourth Proportional to 156,435.46, 215,801.38 and 98,977.88

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Solution

The fourth proportional to 156,435.46, 215,801.38 and 98,977.88 is: 136,539.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,435.46 : 215,801.38 = 98,977.88 : x
  2. Step 2: Convert to fraction form
    156,435.46/215,801.38 = 98,977.88/x
  3. Step 3: Cross multiply
    156,435.46x = 215,801.38 × 98,977.88
  4. Step 4: Simplify right side
    156,435.46x = 21,359,563,093.47
  5. Step 5: Solve for x
    x = 21,359,563,093.47/156,435.46
  6. Step 6: Final answer
    x = 136,539.14

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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.