Home / 120,108,375.12-165,302,753.28-99,031,818.72

Finding the Fourth Proportional to 120,108,375.12, 165,302,753.28 and 99,031,818.72

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Solution

The fourth proportional to 120,108,375.12, 165,302,753.28 and 99,031,818.72 is: 136,295,510.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,108,375.12 : 165,302,753.28 = 99,031,818.72 : x
  2. Step 2: Convert to fraction form
    120,108,375.12/165,302,753.28 = 99,031,818.72/x
  3. Step 3: Cross multiply
    120,108,375.12x = 165,302,753.28 × 99,031,818.72
  4. Step 4: Simplify right side
    120,108,375.12x = 16,370,232,296,741,846
  5. Step 5: Solve for x
    x = 16,370,232,296,741,846/120,108,375.12
  6. Step 6: Final answer
    x = 136,295,510.45

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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.