Home / 156,746.73-216,312.08-85,128.15

Finding the Fourth Proportional to 156,746.73, 216,312.08 and 85,128.15

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Solution

The fourth proportional to 156,746.73, 216,312.08 and 85,128.15 is: 117,477.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,746.73 : 216,312.08 = 85,128.15 : x
  2. Step 2: Convert to fraction form
    156,746.73/216,312.08 = 85,128.15/x
  3. Step 3: Cross multiply
    156,746.73x = 216,312.08 × 85,128.15
  4. Step 4: Simplify right side
    156,746.73x = 18,414,247,193.05
  5. Step 5: Solve for x
    x = 18,414,247,193.05/156,746.73
  6. Step 6: Final answer
    x = 117,477.71

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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.