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Finding the Fourth Proportional to 124,039.20, 186,058.80 and 89,047.20

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Solution

The fourth proportional to 124,039.20, 186,058.80 and 89,047.20 is: 133,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,039.20 : 186,058.80 = 89,047.20 : x
  2. Step 2: Convert to fraction form
    124,039.20/186,058.80 = 89,047.20/x
  3. Step 3: Cross multiply
    124,039.20x = 186,058.80 × 89,047.20
  4. Step 4: Simplify right side
    124,039.20x = 16,568,015,175.36
  5. Step 5: Solve for x
    x = 16,568,015,175.36/124,039.20
  6. Step 6: Final answer
    x = 133,570.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.