Home / 138,623.16-191,300.10-74,960.94

Finding the Fourth Proportional to 138,623.16, 191,300.10 and 74,960.94

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Solution

The fourth proportional to 138,623.16, 191,300.10 and 74,960.94 is: 103,446.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,623.16 : 191,300.10 = 74,960.94 : x
  2. Step 2: Convert to fraction form
    138,623.16/191,300.10 = 74,960.94/x
  3. Step 3: Cross multiply
    138,623.16x = 191,300.10 × 74,960.94
  4. Step 4: Simplify right side
    138,623.16x = 14,340,035,318.09
  5. Step 5: Solve for x
    x = 14,340,035,318.09/138,623.16
  6. Step 6: Final answer
    x = 103,446.17

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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.