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Finding the Fourth Proportional to 136,096.34, 187,816 and 74,838.65

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Solution

The fourth proportional to 136,096.34, 187,816 and 74,838.65 is: 103,279.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,096.34 : 187,816 = 74,838.65 : x
  2. Step 2: Convert to fraction form
    136,096.34/187,816 = 74,838.65/x
  3. Step 3: Cross multiply
    136,096.34x = 187,816 × 74,838.65
  4. Step 4: Simplify right side
    136,096.34x = 14,055,895,888.40
  5. Step 5: Solve for x
    x = 14,055,895,888.40/136,096.34
  6. Step 6: Final answer
    x = 103,279.01

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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.