Home / 156,932.76-216,567.18-85,312.56

Finding the Fourth Proportional to 156,932.76, 216,567.18 and 85,312.56

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Solution

The fourth proportional to 156,932.76, 216,567.18 and 85,312.56 is: 117,731.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,932.76 : 216,567.18 = 85,312.56 : x
  2. Step 2: Convert to fraction form
    156,932.76/216,567.18 = 85,312.56/x
  3. Step 3: Cross multiply
    156,932.76x = 216,567.18 × 85,312.56
  4. Step 4: Simplify right side
    156,932.76x = 18,475,900,537.78
  5. Step 5: Solve for x
    x = 18,475,900,537.78/156,932.76
  6. Step 6: Final answer
    x = 117,731.32

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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.