Home / 156,258.72-215,621.60-87,335.46

Finding the Fourth Proportional to 156,258.72, 215,621.60 and 87,335.46

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Solution

The fourth proportional to 156,258.72, 215,621.60 and 87,335.46 is: 120,514.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,258.72 : 215,621.60 = 87,335.46 : x
  2. Step 2: Convert to fraction form
    156,258.72/215,621.60 = 87,335.46/x
  3. Step 3: Cross multiply
    156,258.72x = 215,621.60 × 87,335.46
  4. Step 4: Simplify right side
    156,258.72x = 18,831,411,621.94
  5. Step 5: Solve for x
    x = 18,831,411,621.94/156,258.72
  6. Step 6: Final answer
    x = 120,514.31

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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.