Home / 138,723.45-191,437.88-75,060.96

Finding the Fourth Proportional to 138,723.45, 191,437.88 and 75,060.96

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Solution

The fourth proportional to 138,723.45, 191,437.88 and 75,060.96 is: 103,583.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,723.45 : 191,437.88 = 75,060.96 : x
  2. Step 2: Convert to fraction form
    138,723.45/191,437.88 = 75,060.96/x
  3. Step 3: Cross multiply
    138,723.45x = 191,437.88 × 75,060.96
  4. Step 4: Simplify right side
    138,723.45x = 14,369,510,677.86
  5. Step 5: Solve for x
    x = 14,369,510,677.86/138,723.45
  6. Step 6: Final answer
    x = 103,583.86

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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.