Home / 156,748.33-216,312.64-85,128.37

Finding the Fourth Proportional to 156,748.33, 216,312.64 and 85,128.37

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Solution

The fourth proportional to 156,748.33, 216,312.64 and 85,128.37 is: 117,477.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,748.33 : 216,312.64 = 85,128.37 : x
  2. Step 2: Convert to fraction form
    156,748.33/216,312.64 = 85,128.37/x
  3. Step 3: Cross multiply
    156,748.33x = 216,312.64 × 85,128.37
  4. Step 4: Simplify right side
    156,748.33x = 18,414,342,453.60
  5. Step 5: Solve for x
    x = 18,414,342,453.60/156,748.33
  6. Step 6: Final answer
    x = 117,477.12

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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.