Home / 128,888,996.76-177,853,411.26-73,116,647.64

Finding the Fourth Proportional to 128,888,996.76, 177,853,411.26 and 73,116,647.64

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Solution

The fourth proportional to 128,888,996.76, 177,853,411.26 and 73,116,647.64 is: 100,893,369.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,888,996.76 : 177,853,411.26 = 73,116,647.64 : x
  2. Step 2: Convert to fraction form
    128,888,996.76/177,853,411.26 = 73,116,647.64/x
  3. Step 3: Cross multiply
    128,888,996.76x = 177,853,411.26 × 73,116,647.64
  4. Step 4: Simplify right side
    128,888,996.76x = 13,004,045,202,669,428
  5. Step 5: Solve for x
    x = 13,004,045,202,669,428/128,888,996.76
  6. Step 6: Final answer
    x = 100,893,369.72

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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.