Home / 129,114,209.85-178,179,380.01-70,376,748.68

Finding the Fourth Proportional to 129,114,209.85, 178,179,380.01 and 70,376,748.68

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Solution

The fourth proportional to 129,114,209.85, 178,179,380.01 and 70,376,748.68 is: 97,120,878.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,114,209.85 : 178,179,380.01 = 70,376,748.68 : x
  2. Step 2: Convert to fraction form
    129,114,209.85/178,179,380.01 = 70,376,748.68/x
  3. Step 3: Cross multiply
    129,114,209.85x = 178,179,380.01 × 70,376,748.68
  4. Step 4: Simplify right side
    129,114,209.85x = 12,539,685,446,956,974
  5. Step 5: Solve for x
    x = 12,539,685,446,956,974/129,114,209.85
  6. Step 6: Final answer
    x = 97,120,878.19

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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.