Home / 128,455,735.52-177,269,089.20-69,718,402.46

Finding the Fourth Proportional to 128,455,735.52, 177,269,089.20 and 69,718,402.46

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Solution

The fourth proportional to 128,455,735.52, 177,269,089.20 and 69,718,402.46 is: 96,211,489.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,455,735.52 : 177,269,089.20 = 69,718,402.46 : x
  2. Step 2: Convert to fraction form
    128,455,735.52/177,269,089.20 = 69,718,402.46/x
  3. Step 3: Cross multiply
    128,455,735.52x = 177,269,089.20 × 69,718,402.46
  4. Step 4: Simplify right side
    128,455,735.52x = 12,358,917,704,563,238
  5. Step 5: Solve for x
    x = 12,358,917,704,563,238/128,455,735.52
  6. Step 6: Final answer
    x = 96,211,489.93

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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.