Home / 128,429,142.40-192,958,286.40-96,578,646.40

Finding the Fourth Proportional to 128,429,142.40, 192,958,286.40 and 96,578,646.40

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Solution

The fourth proportional to 128,429,142.40, 192,958,286.40 and 96,578,646.40 is: 145,104,528.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,429,142.40 : 192,958,286.40 = 96,578,646.40 : x
  2. Step 2: Convert to fraction form
    128,429,142.40/192,958,286.40 = 96,578,646.40/x
  3. Step 3: Cross multiply
    128,429,142.40x = 192,958,286.40 × 96,578,646.40
  4. Step 4: Simplify right side
    128,429,142.40x = 18,635,650,112,175,532
  5. Step 5: Solve for x
    x = 18,635,650,112,175,532/128,429,142.40
  6. Step 6: Final answer
    x = 145,104,528.18

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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.