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Finding the Fourth Proportional to 150,288.45, 207,347.71 and 86,624.88

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Solution

The fourth proportional to 150,288.45, 207,347.71 and 86,624.88 is: 119,513.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,288.45 : 207,347.71 = 86,624.88 : x
  2. Step 2: Convert to fraction form
    150,288.45/207,347.71 = 86,624.88/x
  3. Step 3: Cross multiply
    150,288.45x = 207,347.71 × 86,624.88
  4. Step 4: Simplify right side
    150,288.45x = 17,961,470,497.02
  5. Step 5: Solve for x
    x = 17,961,470,497.02/150,288.45
  6. Step 6: Final answer
    x = 119,513.31

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1.5x scale

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.