Home / 129,917,520.72-179,263,391.76-74,137,473.36

Finding the Fourth Proportional to 129,917,520.72, 179,263,391.76 and 74,137,473.36

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Solution

The fourth proportional to 129,917,520.72, 179,263,391.76 and 74,137,473.36 is: 102,296,709.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,917,520.72 : 179,263,391.76 = 74,137,473.36 : x
  2. Step 2: Convert to fraction form
    129,917,520.72/179,263,391.76 = 74,137,473.36/x
  3. Step 3: Cross multiply
    129,917,520.72x = 179,263,391.76 × 74,137,473.36
  4. Step 4: Simplify right side
    129,917,520.72x = 13,290,134,931,030,242
  5. Step 5: Solve for x
    x = 13,290,134,931,030,242/129,917,520.72
  6. Step 6: Final answer
    x = 102,296,709.92

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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.