Home / 136,739.70-188,710.29-76,322.16

Finding the Fourth Proportional to 136,739.70, 188,710.29 and 76,322.16

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Solution

The fourth proportional to 136,739.70, 188,710.29 and 76,322.16 is: 105,329.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,739.70 : 188,710.29 = 76,322.16 : x
  2. Step 2: Convert to fraction form
    136,739.70/188,710.29 = 76,322.16/x
  3. Step 3: Cross multiply
    136,739.70x = 188,710.29 × 76,322.16
  4. Step 4: Simplify right side
    136,739.70x = 14,402,776,947.03
  5. Step 5: Solve for x
    x = 14,402,776,947.03/136,739.70
  6. Step 6: Final answer
    x = 105,329.89

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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.