Home / 156,929.51-216,564.12-85,309.64

Finding the Fourth Proportional to 156,929.51, 216,564.12 and 85,309.64

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Solution

The fourth proportional to 156,929.51, 216,564.12 and 85,309.64 is: 117,728.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.51 : 216,564.12 = 85,309.64 : x
  2. Step 2: Convert to fraction form
    156,929.51/216,564.12 = 85,309.64/x
  3. Step 3: Cross multiply
    156,929.51x = 216,564.12 × 85,309.64
  4. Step 4: Simplify right side
    156,929.51x = 18,475,007,114.12
  5. Step 5: Solve for x
    x = 18,475,007,114.12/156,929.51
  6. Step 6: Final answer
    x = 117,728.06

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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.