Home / 136,817.89-188,800.76-76,392.36

Finding the Fourth Proportional to 136,817.89, 188,800.76 and 76,392.36

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Solution

The fourth proportional to 136,817.89, 188,800.76 and 76,392.36 is: 105,417.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,817.89 : 188,800.76 = 76,392.36 : x
  2. Step 2: Convert to fraction form
    136,817.89/188,800.76 = 76,392.36/x
  3. Step 3: Cross multiply
    136,817.89x = 188,800.76 × 76,392.36
  4. Step 4: Simplify right side
    136,817.89x = 14,422,935,387.47
  5. Step 5: Solve for x
    x = 14,422,935,387.47/136,817.89
  6. Step 6: Final answer
    x = 105,417.03

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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.