Home / 205,013.76-307,518.81-64,772.38

Finding the Fourth Proportional to 205,013.76, 307,518.81 and 64,772.38

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Solution

The fourth proportional to 205,013.76, 307,518.81 and 64,772.38 is: 97,157.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,013.76 : 307,518.81 = 64,772.38 : x
  2. Step 2: Convert to fraction form
    205,013.76/307,518.81 = 64,772.38/x
  3. Step 3: Cross multiply
    205,013.76x = 307,518.81 × 64,772.38
  4. Step 4: Simplify right side
    205,013.76x = 19,918,725,218.47
  5. Step 5: Solve for x
    x = 19,918,725,218.47/205,013.76
  6. Step 6: Final answer
    x = 97,157.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.