Home / 138,596.43-191,263.04-78,166.94

Finding the Fourth Proportional to 138,596.43, 191,263.04 and 78,166.94

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Solution

The fourth proportional to 138,596.43, 191,263.04 and 78,166.94 is: 107,870.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,596.43 : 191,263.04 = 78,166.94 : x
  2. Step 2: Convert to fraction form
    138,596.43/191,263.04 = 78,166.94/x
  3. Step 3: Cross multiply
    138,596.43x = 191,263.04 × 78,166.94
  4. Step 4: Simplify right side
    138,596.43x = 14,950,447,162.06
  5. Step 5: Solve for x
    x = 14,950,447,162.06/138,596.43
  6. Step 6: Final answer
    x = 107,870.36

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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.