Home / 156,247.21-215,605.74-87,323.95

Finding the Fourth Proportional to 156,247.21, 215,605.74 and 87,323.95

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Solution

The fourth proportional to 156,247.21, 215,605.74 and 87,323.95 is: 120,498.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,247.21 : 215,605.74 = 87,323.95 : x
  2. Step 2: Convert to fraction form
    156,247.21/215,605.74 = 87,323.95/x
  3. Step 3: Cross multiply
    156,247.21x = 215,605.74 × 87,323.95
  4. Step 4: Simplify right side
    156,247.21x = 18,827,544,859.47
  5. Step 5: Solve for x
    x = 18,827,544,859.47/156,247.21
  6. Step 6: Final answer
    x = 120,498.44

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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.