Home / 100,957.10-139,316.36-57,905.87

Finding the Fourth Proportional to 100,957.10, 139,316.36 and 57,905.87

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Solution

The fourth proportional to 100,957.10, 139,316.36 and 57,905.87 is: 79,907.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,957.10 : 139,316.36 = 57,905.87 : x
  2. Step 2: Convert to fraction form
    100,957.10/139,316.36 = 57,905.87/x
  3. Step 3: Cross multiply
    100,957.10x = 139,316.36 × 57,905.87
  4. Step 4: Simplify right side
    100,957.10x = 8,067,234,044.92
  5. Step 5: Solve for x
    x = 8,067,234,044.92/100,957.10
  6. Step 6: Final answer
    x = 79,907.55

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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.