Home / 121,328,123.20-181,614,271.20-87,315,899.20

Finding the Fourth Proportional to 121,328,123.20, 181,614,271.20 and 87,315,899.20

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Solution

The fourth proportional to 121,328,123.20, 181,614,271.20 and 87,315,899.20 is: 130,701,876.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,328,123.20 : 181,614,271.20 = 87,315,899.20 : x
  2. Step 2: Convert to fraction form
    121,328,123.20/181,614,271.20 = 87,315,899.20/x
  3. Step 3: Cross multiply
    121,328,123.20x = 181,614,271.20 × 87,315,899.20
  4. Step 4: Simplify right side
    121,328,123.20x = 15,857,813,397,380,662
  5. Step 5: Solve for x
    x = 15,857,813,397,380,662/121,328,123.20
  6. Step 6: Final answer
    x = 130,701,876.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.