Home / 136,877.68-188,889.96-75,623.78

Finding the Fourth Proportional to 136,877.68, 188,889.96 and 75,623.78

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Solution

The fourth proportional to 136,877.68, 188,889.96 and 75,623.78 is: 104,360.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,877.68 : 188,889.96 = 75,623.78 : x
  2. Step 2: Convert to fraction form
    136,877.68/188,889.96 = 75,623.78/x
  3. Step 3: Cross multiply
    136,877.68x = 188,889.96 × 75,623.78
  4. Step 4: Simplify right side
    136,877.68x = 14,284,572,779.25
  5. Step 5: Solve for x
    x = 14,284,572,779.25/136,877.68
  6. Step 6: Final answer
    x = 104,360.13

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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.