Home / 134,965.54-186,275.24-78,409.72

Finding the Fourth Proportional to 134,965.54, 186,275.24 and 78,409.72

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Solution

The fourth proportional to 134,965.54, 186,275.24 and 78,409.72 is: 108,218.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,965.54 : 186,275.24 = 78,409.72 : x
  2. Step 2: Convert to fraction form
    134,965.54/186,275.24 = 78,409.72/x
  3. Step 3: Cross multiply
    134,965.54x = 186,275.24 × 78,409.72
  4. Step 4: Simplify right side
    134,965.54x = 14,605,789,411.33
  5. Step 5: Solve for x
    x = 14,605,789,411.33/134,965.54
  6. Step 6: Final answer
    x = 108,218.66

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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.