Home / 136,646.40-188,571.55-76,217.00

Finding the Fourth Proportional to 136,646.40, 188,571.55 and 76,217.00

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Solution

The fourth proportional to 136,646.40, 188,571.55 and 76,217.00 is: 105,179.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,646.40 : 188,571.55 = 76,217.00 : x
  2. Step 2: Convert to fraction form
    136,646.40/188,571.55 = 76,217.00/x
  3. Step 3: Cross multiply
    136,646.40x = 188,571.55 × 76,217.00
  4. Step 4: Simplify right side
    136,646.40x = 14,372,357,896.57
  5. Step 5: Solve for x
    x = 14,372,357,896.57/136,646.40
  6. Step 6: Final answer
    x = 105,179.19

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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.