Home / 129,288,439.90-178,421,832.84-70,554,889.54

Finding the Fourth Proportional to 129,288,439.90, 178,421,832.84 and 70,554,889.54

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Solution

The fourth proportional to 129,288,439.90, 178,421,832.84 and 70,554,889.54 is: 97,367,813.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,288,439.90 : 178,421,832.84 = 70,554,889.54 : x
  2. Step 2: Convert to fraction form
    129,288,439.90/178,421,832.84 = 70,554,889.54/x
  3. Step 3: Cross multiply
    129,288,439.90x = 178,421,832.84 × 70,554,889.54
  4. Step 4: Simplify right side
    129,288,439.90x = 12,588,532,707,550,546
  5. Step 5: Solve for x
    x = 12,588,532,707,550,546/129,288,439.90
  6. Step 6: Final answer
    x = 97,367,813.53

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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.