Home / 156,760.03-216,325.27-85,138.51

Finding the Fourth Proportional to 156,760.03, 216,325.27 and 85,138.51

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Solution

The fourth proportional to 156,760.03, 216,325.27 and 85,138.51 is: 117,489.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,760.03 : 216,325.27 = 85,138.51 : x
  2. Step 2: Convert to fraction form
    156,760.03/216,325.27 = 85,138.51/x
  3. Step 3: Cross multiply
    156,760.03x = 216,325.27 × 85,138.51
  4. Step 4: Simplify right side
    156,760.03x = 18,417,610,655.46
  5. Step 5: Solve for x
    x = 18,417,610,655.46/156,760.03
  6. Step 6: Final answer
    x = 117,489.20

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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.