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Finding the Fourth Proportional to 134,870.60, 202,087.20 and 84,861.20

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Solution

The fourth proportional to 134,870.60, 202,087.20 and 84,861.20 is: 127,154.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,870.60 : 202,087.20 = 84,861.20 : x
  2. Step 2: Convert to fraction form
    134,870.60/202,087.20 = 84,861.20/x
  3. Step 3: Cross multiply
    134,870.60x = 202,087.20 × 84,861.20
  4. Step 4: Simplify right side
    134,870.60x = 17,149,362,296.64
  5. Step 5: Solve for x
    x = 17,149,362,296.64/134,870.60
  6. Step 6: Final answer
    x = 127,154.19

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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.