Home / 129,378,175.67-178,540,530.27-70,640,659.55

Finding the Fourth Proportional to 129,378,175.67, 178,540,530.27 and 70,640,659.55

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Solution

The fourth proportional to 129,378,175.67, 178,540,530.27 and 70,640,659.55 is: 97,483,371.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,378,175.67 : 178,540,530.27 = 70,640,659.55 : x
  2. Step 2: Convert to fraction form
    129,378,175.67/178,540,530.27 = 70,640,659.55/x
  3. Step 3: Cross multiply
    129,378,175.67x = 178,540,530.27 × 70,640,659.55
  4. Step 4: Simplify right side
    129,378,175.67x = 12,612,220,814,679,540
  5. Step 5: Solve for x
    x = 12,612,220,814,679,540/129,378,175.67
  6. Step 6: Final answer
    x = 97,483,371.90

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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.