Home / 119,661,508.80-165,104,763.89-72,617,516.78

Finding the Fourth Proportional to 119,661,508.80, 165,104,763.89 and 72,617,516.78

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Solution

The fourth proportional to 119,661,508.80, 165,104,763.89 and 72,617,516.78 is: 100,195,109.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,661,508.80 : 165,104,763.89 = 72,617,516.78 : x
  2. Step 2: Convert to fraction form
    119,661,508.80/165,104,763.89 = 72,617,516.78/x
  3. Step 3: Cross multiply
    119,661,508.80x = 165,104,763.89 × 72,617,516.78
  4. Step 4: Simplify right side
    119,661,508.80x = 11,989,497,961,051,402
  5. Step 5: Solve for x
    x = 11,989,497,961,051,402/119,661,508.80
  6. Step 6: Final answer
    x = 100,195,109.37

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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.