Home / 156,264.80-215,629.98-87,341.36

Finding the Fourth Proportional to 156,264.80, 215,629.98 and 87,341.36

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Solution

The fourth proportional to 156,264.80, 215,629.98 and 87,341.36 is: 120,522.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,264.80 : 215,629.98 = 87,341.36 : x
  2. Step 2: Convert to fraction form
    156,264.80/215,629.98 = 87,341.36/x
  3. Step 3: Cross multiply
    156,264.80x = 215,629.98 × 87,341.36
  4. Step 4: Simplify right side
    156,264.80x = 18,833,415,709.97
  5. Step 5: Solve for x
    x = 18,833,415,709.97/156,264.80
  6. Step 6: Final answer
    x = 120,522.44

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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.