Home / 156,921.81-216,551.91-85,302.32

Finding the Fourth Proportional to 156,921.81, 216,551.91 and 85,302.32

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Solution

The fourth proportional to 156,921.81, 216,551.91 and 85,302.32 is: 117,717.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,921.81 : 216,551.91 = 85,302.32 : x
  2. Step 2: Convert to fraction form
    156,921.81/216,551.91 = 85,302.32/x
  3. Step 3: Cross multiply
    156,921.81x = 216,551.91 × 85,302.32
  4. Step 4: Simplify right side
    156,921.81x = 18,472,379,560.56
  5. Step 5: Solve for x
    x = 18,472,379,560.56/156,921.81
  6. Step 6: Final answer
    x = 117,717.10

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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.