Home / 100,775.86-139,089.09-58,338.34

Finding the Fourth Proportional to 100,775.86, 139,089.09 and 58,338.34

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Solution

The fourth proportional to 100,775.86, 139,089.09 and 58,338.34 is: 80,517.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,775.86 : 139,089.09 = 58,338.34 : x
  2. Step 2: Convert to fraction form
    100,775.86/139,089.09 = 58,338.34/x
  3. Step 3: Cross multiply
    100,775.86x = 139,089.09 × 58,338.34
  4. Step 4: Simplify right side
    100,775.86x = 8,114,226,622.71
  5. Step 5: Solve for x
    x = 8,114,226,622.71/100,775.86
  6. Step 6: Final answer
    x = 80,517.56

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1.5x scale

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.