Home / 128,960,327.20-193,440,490.80-99,735,008.80

Finding the Fourth Proportional to 128,960,327.20, 193,440,490.80 and 99,735,008.80

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Solution

The fourth proportional to 128,960,327.20, 193,440,490.80 and 99,735,008.80 is: 149,602,513.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,960,327.20 : 193,440,490.80 = 99,735,008.80 : x
  2. Step 2: Convert to fraction form
    128,960,327.20/193,440,490.80 = 99,735,008.80/x
  3. Step 3: Cross multiply
    128,960,327.20x = 193,440,490.80 × 99,735,008.80
  4. Step 4: Simplify right side
    128,960,327.20x = 19,292,789,052,214,320
  5. Step 5: Solve for x
    x = 19,292,789,052,214,320/128,960,327.20
  6. Step 6: Final answer
    x = 149,602,513.20

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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.