Home / 102,921,956.70-142,036,932.15-61,667,962.62

Finding the Fourth Proportional to 102,921,956.70, 142,036,932.15 and 61,667,962.62

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Solution

The fourth proportional to 102,921,956.70, 142,036,932.15 and 61,667,962.62 is: 85,104,563.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,921,956.70 : 142,036,932.15 = 61,667,962.62 : x
  2. Step 2: Convert to fraction form
    102,921,956.70/142,036,932.15 = 61,667,962.62/x
  3. Step 3: Cross multiply
    102,921,956.70x = 142,036,932.15 × 61,667,962.62
  4. Step 4: Simplify right side
    102,921,956.70x = 8,759,128,222,485,676
  5. Step 5: Solve for x
    x = 8,759,128,222,485,676/102,921,956.70
  6. Step 6: Final answer
    x = 85,104,563.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.