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Finding the Fourth Proportional to 150,072.40, 207,103.80 and 86,412.88

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Solution

The fourth proportional to 150,072.40, 207,103.80 and 86,412.88 is: 119,252.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,072.40 : 207,103.80 = 86,412.88 : x
  2. Step 2: Convert to fraction form
    150,072.40/207,103.80 = 86,412.88/x
  3. Step 3: Cross multiply
    150,072.40x = 207,103.80 × 86,412.88
  4. Step 4: Simplify right side
    150,072.40x = 17,896,435,816.94
  5. Step 5: Solve for x
    x = 17,896,435,816.94/150,072.40
  6. Step 6: Final answer
    x = 119,252.01

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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.