Home / 140,248,142.74-193,538,723.79-78,368,989.78

Finding the Fourth Proportional to 140,248,142.74, 193,538,723.79 and 78,368,989.78

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Solution

The fourth proportional to 140,248,142.74, 193,538,723.79 and 78,368,989.78 is: 108,147,131.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,248,142.74 : 193,538,723.79 = 78,368,989.78 : x
  2. Step 2: Convert to fraction form
    140,248,142.74/193,538,723.79 = 78,368,989.78/x
  3. Step 3: Cross multiply
    140,248,142.74x = 193,538,723.79 × 78,368,989.78
  4. Step 4: Simplify right side
    140,248,142.74x = 15,167,434,266,732,752
  5. Step 5: Solve for x
    x = 15,167,434,266,732,752/140,248,142.74
  6. Step 6: Final answer
    x = 108,147,131.01

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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.