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Finding the Fourth Proportional to 113,855.60, 170,719.40 and 43,737.20

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Solution

The fourth proportional to 113,855.60, 170,719.40 and 43,737.20 is: 65,581.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,855.60 : 170,719.40 = 43,737.20 : x
  2. Step 2: Convert to fraction form
    113,855.60/170,719.40 = 43,737.20/x
  3. Step 3: Cross multiply
    113,855.60x = 170,719.40 × 43,737.20
  4. Step 4: Simplify right side
    113,855.60x = 7,466,788,541.68
  5. Step 5: Solve for x
    x = 7,466,788,541.68/113,855.60
  6. Step 6: Final answer
    x = 65,581.21

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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.