Home / 128,431,948.16-177,236,209.68-73,428,956.48

Finding the Fourth Proportional to 128,431,948.16, 177,236,209.68 and 73,428,956.48

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Solution

The fourth proportional to 128,431,948.16, 177,236,209.68 and 73,428,956.48 is: 101,332,029.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,431,948.16 : 177,236,209.68 = 73,428,956.48 : x
  2. Step 2: Convert to fraction form
    128,431,948.16/177,236,209.68 = 73,428,956.48/x
  3. Step 3: Cross multiply
    128,431,948.16x = 177,236,209.68 × 73,428,956.48
  4. Step 4: Simplify right side
    128,431,948.16x = 13,014,269,927,272,876
  5. Step 5: Solve for x
    x = 13,014,269,927,272,876/128,431,948.16
  6. Step 6: Final answer
    x = 101,332,029.25

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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.