Home / 136,137.78-187,875.05-75,714.62

Finding the Fourth Proportional to 136,137.78, 187,875.05 and 75,714.62

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Solution

The fourth proportional to 136,137.78, 187,875.05 and 75,714.62 is: 104,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,137.78 : 187,875.05 = 75,714.62 : x
  2. Step 2: Convert to fraction form
    136,137.78/187,875.05 = 75,714.62/x
  3. Step 3: Cross multiply
    136,137.78x = 187,875.05 × 75,714.62
  4. Step 4: Simplify right side
    136,137.78x = 14,224,886,700.28
  5. Step 5: Solve for x
    x = 14,224,886,700.28/136,137.78
  6. Step 6: Final answer
    x = 104,488.90

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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.