Home / 128,200,557.62-176,977,768.98-85,886,976.05

Finding the Fourth Proportional to 128,200,557.62, 176,977,768.98 and 85,886,976.05

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Solution

The fourth proportional to 128,200,557.62, 176,977,768.98 and 85,886,976.05 is: 118,564,893.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,200,557.62 : 176,977,768.98 = 85,886,976.05 : x
  2. Step 2: Convert to fraction form
    128,200,557.62/176,977,768.98 = 85,886,976.05/x
  3. Step 3: Cross multiply
    128,200,557.62x = 176,977,768.98 × 85,886,976.05
  4. Step 4: Simplify right side
    128,200,557.62x = 15,200,085,405,868,546
  5. Step 5: Solve for x
    x = 15,200,085,405,868,546/128,200,557.62
  6. Step 6: Final answer
    x = 118,564,893.07

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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.