Home / 136,889.48-188,905.46-76,461

Finding the Fourth Proportional to 136,889.48, 188,905.46 and 76,461

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Solution

The fourth proportional to 136,889.48, 188,905.46 and 76,461 is: 105,515.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,889.48 : 188,905.46 = 76,461 : x
  2. Step 2: Convert to fraction form
    136,889.48/188,905.46 = 76,461/x
  3. Step 3: Cross multiply
    136,889.48x = 188,905.46 × 76,461
  4. Step 4: Simplify right side
    136,889.48x = 14,443,899,994.76
  5. Step 5: Solve for x
    x = 14,443,899,994.76/136,889.48
  6. Step 6: Final answer
    x = 105,515.05

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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.