Home / 100,821.60-151,232.40-89,935.20

Finding the Fourth Proportional to 100,821.60, 151,232.40 and 89,935.20

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Solution

The fourth proportional to 100,821.60, 151,232.40 and 89,935.20 is: 134,902.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,821.60 : 151,232.40 = 89,935.20 : x
  2. Step 2: Convert to fraction form
    100,821.60/151,232.40 = 89,935.20/x
  3. Step 3: Cross multiply
    100,821.60x = 151,232.40 × 89,935.20
  4. Step 4: Simplify right side
    100,821.60x = 13,601,116,140.48
  5. Step 5: Solve for x
    x = 13,601,116,140.48/100,821.60
  6. Step 6: Final answer
    x = 134,902.80

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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.