Home / 156,739.32-216,298.22-85,119.80

Finding the Fourth Proportional to 156,739.32, 216,298.22 and 85,119.80

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Solution

The fourth proportional to 156,739.32, 216,298.22 and 85,119.80 is: 117,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,739.32 : 216,298.22 = 85,119.80 : x
  2. Step 2: Convert to fraction form
    156,739.32/216,298.22 = 85,119.80/x
  3. Step 3: Cross multiply
    156,739.32x = 216,298.22 × 85,119.80
  4. Step 4: Simplify right side
    156,739.32x = 18,411,259,719.67
  5. Step 5: Solve for x
    x = 18,411,259,719.67/156,739.32
  6. Step 6: Final answer
    x = 117,464.21

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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.