Home / 128,304,074.60-192,456,111.90-123,769,111.40

Finding the Fourth Proportional to 128,304,074.60, 192,456,111.90 and 123,769,111.40

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Solution

The fourth proportional to 128,304,074.60, 192,456,111.90 and 123,769,111.40 is: 185,653,667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,074.60 : 192,456,111.90 = 123,769,111.40 : x
  2. Step 2: Convert to fraction form
    128,304,074.60/192,456,111.90 = 123,769,111.40/x
  3. Step 3: Cross multiply
    128,304,074.60x = 192,456,111.90 × 123,769,111.40
  4. Step 4: Simplify right side
    128,304,074.60x = 23,820,121,953,361,968
  5. Step 5: Solve for x
    x = 23,820,121,953,361,968/128,304,074.60
  6. Step 6: Final answer
    x = 185,653,667.10

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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.