Home / 128,452,543.68-177,265,786.86-69,715,730.64

Finding the Fourth Proportional to 128,452,543.68, 177,265,786.86 and 69,715,730.64

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Solution

The fourth proportional to 128,452,543.68, 177,265,786.86 and 69,715,730.64 is: 96,208,401.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,452,543.68 : 177,265,786.86 = 69,715,730.64 : x
  2. Step 2: Convert to fraction form
    128,452,543.68/177,265,786.86 = 69,715,730.64/x
  3. Step 3: Cross multiply
    128,452,543.68x = 177,265,786.86 × 69,715,730.64
  4. Step 4: Simplify right side
    128,452,543.68x = 12,358,213,848,419,412
  5. Step 5: Solve for x
    x = 12,358,213,848,419,412/128,452,543.68
  6. Step 6: Final answer
    x = 96,208,401.13

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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.