Home / 134,901.54-186,177.36-78,309.54

Finding the Fourth Proportional to 134,901.54, 186,177.36 and 78,309.54

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Solution

The fourth proportional to 134,901.54, 186,177.36 and 78,309.54 is: 108,074.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,901.54 : 186,177.36 = 78,309.54 : x
  2. Step 2: Convert to fraction form
    134,901.54/186,177.36 = 78,309.54/x
  3. Step 3: Cross multiply
    134,901.54x = 186,177.36 × 78,309.54
  4. Step 4: Simplify right side
    134,901.54x = 14,579,463,420.01
  5. Step 5: Solve for x
    x = 14,579,463,420.01/134,901.54
  6. Step 6: Final answer
    x = 108,074.85

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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.