Home / 156,431.64-215,862.38-88,439.18

Finding the Fourth Proportional to 156,431.64, 215,862.38 and 88,439.18

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Solution

The fourth proportional to 156,431.64, 215,862.38 and 88,439.18 is: 122,038.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,431.64 : 215,862.38 = 88,439.18 : x
  2. Step 2: Convert to fraction form
    156,431.64/215,862.38 = 88,439.18/x
  3. Step 3: Cross multiply
    156,431.64x = 215,862.38 × 88,439.18
  4. Step 4: Simplify right side
    156,431.64x = 19,090,691,880.05
  5. Step 5: Solve for x
    x = 19,090,691,880.05/156,431.64
  6. Step 6: Final answer
    x = 122,038.56

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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.