Home / 99,180.54-136,830.21-56,716.29

Finding the Fourth Proportional to 99,180.54, 136,830.21 and 56,716.29

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Solution

The fourth proportional to 99,180.54, 136,830.21 and 56,716.29 is: 78,246.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,180.54 : 136,830.21 = 56,716.29 : x
  2. Step 2: Convert to fraction form
    99,180.54/136,830.21 = 56,716.29/x
  3. Step 3: Cross multiply
    99,180.54x = 136,830.21 × 56,716.29
  4. Step 4: Simplify right side
    99,180.54x = 7,760,501,871.12
  5. Step 5: Solve for x
    x = 7,760,501,871.12/99,180.54
  6. Step 6: Final answer
    x = 78,246.22

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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.