Home / 128,740,305.60-192,942,496.80-59,645,102.40

Finding the Fourth Proportional to 128,740,305.60, 192,942,496.80 and 59,645,102.40

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Solution

The fourth proportional to 128,740,305.60, 192,942,496.80 and 59,645,102.40 is: 89,389,837.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,740,305.60 : 192,942,496.80 = 59,645,102.40 : x
  2. Step 2: Convert to fraction form
    128,740,305.60/192,942,496.80 = 59,645,102.40/x
  3. Step 3: Cross multiply
    128,740,305.60x = 192,942,496.80 × 59,645,102.40
  4. Step 4: Simplify right side
    128,740,305.60x = 11,508,074,978,947,672
  5. Step 5: Solve for x
    x = 11,508,074,978,947,672/128,740,305.60
  6. Step 6: Final answer
    x = 89,389,837.36

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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.