Home / 134,995.48-186,295.72-78,406.84

Finding the Fourth Proportional to 134,995.48, 186,295.72 and 78,406.84

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Solution

The fourth proportional to 134,995.48, 186,295.72 and 78,406.84 is: 108,202.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,995.48 : 186,295.72 = 78,406.84 : x
  2. Step 2: Convert to fraction form
    134,995.48/186,295.72 = 78,406.84/x
  3. Step 3: Cross multiply
    134,995.48x = 186,295.72 × 78,406.84
  4. Step 4: Simplify right side
    134,995.48x = 14,606,858,710.72
  5. Step 5: Solve for x
    x = 14,606,858,710.72/134,995.48
  6. Step 6: Final answer
    x = 108,202.58

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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.