Home / 156,742.06-216,300.48-85,120.54

Finding the Fourth Proportional to 156,742.06, 216,300.48 and 85,120.54

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Solution

The fourth proportional to 156,742.06, 216,300.48 and 85,120.54 is: 117,464.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,742.06 : 216,300.48 = 85,120.54 : x
  2. Step 2: Convert to fraction form
    156,742.06/216,300.48 = 85,120.54/x
  3. Step 3: Cross multiply
    156,742.06x = 216,300.48 × 85,120.54
  4. Step 4: Simplify right side
    156,742.06x = 18,411,613,659.86
  5. Step 5: Solve for x
    x = 18,411,613,659.86/156,742.06
  6. Step 6: Final answer
    x = 117,464.41

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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.