Home / 128,907,963.90-193,078,510.65-111,901,851.90

Finding the Fourth Proportional to 128,907,963.90, 193,078,510.65 and 111,901,851.90

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Solution

The fourth proportional to 128,907,963.90, 193,078,510.65 and 111,901,851.90 is: 167,606,734.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,907,963.90 : 193,078,510.65 = 111,901,851.90 : x
  2. Step 2: Convert to fraction form
    128,907,963.90/193,078,510.65 = 111,901,851.90/x
  3. Step 3: Cross multiply
    128,907,963.90x = 193,078,510.65 × 111,901,851.90
  4. Step 4: Simplify right side
    128,907,963.90x = 21,605,842,903,828,876
  5. Step 5: Solve for x
    x = 21,605,842,903,828,876/128,907,963.90
  6. Step 6: Final answer
    x = 167,606,734.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.