Home / 156,629.10-216,148.28-85,009.11

Finding the Fourth Proportional to 156,629.10, 216,148.28 and 85,009.11

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Solution

The fourth proportional to 156,629.10, 216,148.28 and 85,009.11 is: 117,312.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,629.10 : 216,148.28 = 85,009.11 : x
  2. Step 2: Convert to fraction form
    156,629.10/216,148.28 = 85,009.11/x
  3. Step 3: Cross multiply
    156,629.10x = 216,148.28 × 85,009.11
  4. Step 4: Simplify right side
    156,629.10x = 18,374,572,910.83
  5. Step 5: Solve for x
    x = 18,374,572,910.83/156,629.10
  6. Step 6: Final answer
    x = 117,312.64

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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.