Home / 156,918.69-216,545.22-85,300.50

Finding the Fourth Proportional to 156,918.69, 216,545.22 and 85,300.50

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Solution

The fourth proportional to 156,918.69, 216,545.22 and 85,300.50 is: 117,713.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,918.69 : 216,545.22 = 85,300.50 : x
  2. Step 2: Convert to fraction form
    156,918.69/216,545.22 = 85,300.50/x
  3. Step 3: Cross multiply
    156,918.69x = 216,545.22 × 85,300.50
  4. Step 4: Simplify right side
    156,918.69x = 18,471,415,538.61
  5. Step 5: Solve for x
    x = 18,471,415,538.61/156,918.69
  6. Step 6: Final answer
    x = 117,713.29

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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.