Home / 128,801,857.60-193,352,085.60-77,741,531.20

Finding the Fourth Proportional to 128,801,857.60, 193,352,085.60 and 77,741,531.20

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Solution

The fourth proportional to 128,801,857.60, 193,352,085.60 and 77,741,531.20 is: 116,702,410.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,801,857.60 : 193,352,085.60 = 77,741,531.20 : x
  2. Step 2: Convert to fraction form
    128,801,857.60/193,352,085.60 = 77,741,531.20/x
  3. Step 3: Cross multiply
    128,801,857.60x = 193,352,085.60 × 77,741,531.20
  4. Step 4: Simplify right side
    128,801,857.60x = 15,031,487,195,257,470
  5. Step 5: Solve for x
    x = 15,031,487,195,257,470/128,801,857.60
  6. Step 6: Final answer
    x = 116,702,410.01

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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.