Home / 142,992,657.42-197,324,056.68-81,111,667.38

Finding the Fourth Proportional to 142,992,657.42, 197,324,056.68 and 81,111,667.38

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Solution

The fourth proportional to 142,992,657.42, 197,324,056.68 and 81,111,667.38 is: 111,930,804.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,992,657.42 : 197,324,056.68 = 81,111,667.38 : x
  2. Step 2: Convert to fraction form
    142,992,657.42/197,324,056.68 = 81,111,667.38/x
  3. Step 3: Cross multiply
    142,992,657.42x = 197,324,056.68 × 81,111,667.38
  4. Step 4: Simplify right side
    142,992,657.42x = 16,005,283,251,500,426
  5. Step 5: Solve for x
    x = 16,005,283,251,500,426/142,992,657.42
  6. Step 6: Final answer
    x = 111,930,804.98

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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.