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Finding the Fourth Proportional to 150,549.51, 207,743.36 and 86,907.81

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Solution

The fourth proportional to 150,549.51, 207,743.36 and 86,907.81 is: 119,924.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,549.51 : 207,743.36 = 86,907.81 : x
  2. Step 2: Convert to fraction form
    150,549.51/207,743.36 = 86,907.81/x
  3. Step 3: Cross multiply
    150,549.51x = 207,743.36 × 86,907.81
  4. Step 4: Simplify right side
    150,549.51x = 18,054,520,025.10
  5. Step 5: Solve for x
    x = 18,054,520,025.10/150,549.51
  6. Step 6: Final answer
    x = 119,924.14

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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.