Home / 128,725,077.80-193,087,616.70-74,305,519.40

Finding the Fourth Proportional to 128,725,077.80, 193,087,616.70 and 74,305,519.40

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Solution

The fourth proportional to 128,725,077.80, 193,087,616.70 and 74,305,519.40 is: 111,458,279.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,725,077.80 : 193,087,616.70 = 74,305,519.40 : x
  2. Step 2: Convert to fraction form
    128,725,077.80/193,087,616.70 = 74,305,519.40/x
  3. Step 3: Cross multiply
    128,725,077.80x = 193,087,616.70 × 74,305,519.40
  4. Step 4: Simplify right side
    128,725,077.80x = 14,347,475,648,601,614
  5. Step 5: Solve for x
    x = 14,347,475,648,601,614/128,725,077.80
  6. Step 6: Final answer
    x = 111,458,279.10

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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.