Home / 138,631,764.93-191,316,989.61-79,102,752.90

Finding the Fourth Proportional to 138,631,764.93, 191,316,989.61 and 79,102,752.90

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Solution

The fourth proportional to 138,631,764.93, 191,316,989.61 and 79,102,752.90 is: 109,164,739.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,631,764.93 : 191,316,989.61 = 79,102,752.90 : x
  2. Step 2: Convert to fraction form
    138,631,764.93/191,316,989.61 = 79,102,752.90/x
  3. Step 3: Cross multiply
    138,631,764.93x = 191,316,989.61 × 79,102,752.90
  4. Step 4: Simplify right side
    138,631,764.93x = 15,133,700,554,691,700
  5. Step 5: Solve for x
    x = 15,133,700,554,691,700/138,631,764.93
  6. Step 6: Final answer
    x = 109,164,739.86

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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.