Home / 136,947.74-188,969.09-76,510.88

Finding the Fourth Proportional to 136,947.74, 188,969.09 and 76,510.88

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Solution

The fourth proportional to 136,947.74, 188,969.09 and 76,510.88 is: 105,574.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,947.74 : 188,969.09 = 76,510.88 : x
  2. Step 2: Convert to fraction form
    136,947.74/188,969.09 = 76,510.88/x
  3. Step 3: Cross multiply
    136,947.74x = 188,969.09 × 76,510.88
  4. Step 4: Simplify right side
    136,947.74x = 14,458,191,368.70
  5. Step 5: Solve for x
    x = 14,458,191,368.70/136,947.74
  6. Step 6: Final answer
    x = 105,574.52

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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.