Home / 129,979,089.81-179,375,481.78-71,241,905.43

Finding the Fourth Proportional to 129,979,089.81, 179,375,481.78 and 71,241,905.43

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Solution

The fourth proportional to 129,979,089.81, 179,375,481.78 and 71,241,905.43 is: 98,316,207.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,979,089.81 : 179,375,481.78 = 71,241,905.43 : x
  2. Step 2: Convert to fraction form
    129,979,089.81/179,375,481.78 = 71,241,905.43/x
  3. Step 3: Cross multiply
    129,979,089.81x = 179,375,481.78 × 71,241,905.43
  4. Step 4: Simplify right side
    129,979,089.81x = 12,779,051,109,431,450
  5. Step 5: Solve for x
    x = 12,779,051,109,431,450/129,979,089.81
  6. Step 6: Final answer
    x = 98,316,207.08

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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.