Home / 128,480,756.92-177,303,671.18-69,743,462.72

Finding the Fourth Proportional to 128,480,756.92, 177,303,671.18 and 69,743,462.72

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Solution

The fourth proportional to 128,480,756.92, 177,303,671.18 and 69,743,462.72 is: 96,246,101.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,480,756.92 : 177,303,671.18 = 69,743,462.72 : x
  2. Step 2: Convert to fraction form
    128,480,756.92/177,303,671.18 = 69,743,462.72/x
  3. Step 3: Cross multiply
    128,480,756.92x = 177,303,671.18 × 69,743,462.72
  4. Step 4: Simplify right side
    128,480,756.92x = 12,365,771,981,061,468
  5. Step 5: Solve for x
    x = 12,365,771,981,061,468/128,480,756.92
  6. Step 6: Final answer
    x = 96,246,101.58

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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.