Home / 156,780.67-216,357.74-85,160.11

Finding the Fourth Proportional to 156,780.67, 216,357.74 and 85,160.11

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Solution

The fourth proportional to 156,780.67, 216,357.74 and 85,160.11 is: 117,521.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,780.67 : 216,357.74 = 85,160.11 : x
  2. Step 2: Convert to fraction form
    156,780.67/216,357.74 = 85,160.11/x
  3. Step 3: Cross multiply
    156,780.67x = 216,357.74 × 85,160.11
  4. Step 4: Simplify right side
    156,780.67x = 18,425,048,511.95
  5. Step 5: Solve for x
    x = 18,425,048,511.95/156,780.67
  6. Step 6: Final answer
    x = 117,521.17

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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.