Home / 83,133,429.60-124,700,144.40-81,007,665.60

Finding the Fourth Proportional to 83,133,429.60, 124,700,144.40 and 81,007,665.60

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Solution

The fourth proportional to 83,133,429.60, 124,700,144.40 and 81,007,665.60 is: 121,511,498.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,133,429.60 : 124,700,144.40 = 81,007,665.60 : x
  2. Step 2: Convert to fraction form
    83,133,429.60/124,700,144.40 = 81,007,665.60/x
  3. Step 3: Cross multiply
    83,133,429.60x = 124,700,144.40 × 81,007,665.60
  4. Step 4: Simplify right side
    83,133,429.60x = 10,101,667,597,826,912
  5. Step 5: Solve for x
    x = 10,101,667,597,826,912/83,133,429.60
  6. Step 6: Final answer
    x = 121,511,498.40

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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.