Home / 156,933.37-216,565.48-85,315.20

Finding the Fourth Proportional to 156,933.37, 216,565.48 and 85,315.20

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Solution

The fourth proportional to 156,933.37, 216,565.48 and 85,315.20 is: 117,733.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,933.37 : 216,565.48 = 85,315.20 : x
  2. Step 2: Convert to fraction form
    156,933.37/216,565.48 = 85,315.20/x
  3. Step 3: Cross multiply
    156,933.37x = 216,565.48 × 85,315.20
  4. Step 4: Simplify right side
    156,933.37x = 18,476,327,239.30
  5. Step 5: Solve for x
    x = 18,476,327,239.30/156,933.37
  6. Step 6: Final answer
    x = 117,733.58

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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.