Home / 136,560.28-188,437.98-76,126.36

Finding the Fourth Proportional to 136,560.28, 188,437.98 and 76,126.36

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Solution

The fourth proportional to 136,560.28, 188,437.98 and 76,126.36 is: 105,045.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,560.28 : 188,437.98 = 76,126.36 : x
  2. Step 2: Convert to fraction form
    136,560.28/188,437.98 = 76,126.36/x
  3. Step 3: Cross multiply
    136,560.28x = 188,437.98 × 76,126.36
  4. Step 4: Simplify right side
    136,560.28x = 14,345,097,503.15
  5. Step 5: Solve for x
    x = 14,345,097,503.15/136,560.28
  6. Step 6: Final answer
    x = 105,045.90

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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.