Home / 120,132,506.16-165,919,715.80-81,434,153.52

Finding the Fourth Proportional to 120,132,506.16, 165,919,715.80 and 81,434,153.52

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Solution

The fourth proportional to 120,132,506.16, 165,919,715.80 and 81,434,153.52 is: 112,471,903.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132,506.16 : 165,919,715.80 = 81,434,153.52 : x
  2. Step 2: Convert to fraction form
    120,132,506.16/165,919,715.80 = 81,434,153.52/x
  3. Step 3: Cross multiply
    120,132,506.16x = 165,919,715.80 × 81,434,153.52
  4. Step 4: Simplify right side
    120,132,506.16x = 13,511,531,608,451,970
  5. Step 5: Solve for x
    x = 13,511,531,608,451,970/120,132,506.16
  6. Step 6: Final answer
    x = 112,471,903.24

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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.