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Finding the Fourth Proportional to 115,349.20, 159,154.64 and 65,038.48

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Solution

The fourth proportional to 115,349.20, 159,154.64 and 65,038.48 is: 89,737.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,349.20 : 159,154.64 = 65,038.48 : x
  2. Step 2: Convert to fraction form
    115,349.20/159,154.64 = 65,038.48/x
  3. Step 3: Cross multiply
    115,349.20x = 159,154.64 × 65,038.48
  4. Step 4: Simplify right side
    115,349.20x = 10,351,175,870.55
  5. Step 5: Solve for x
    x = 10,351,175,870.55/115,349.20
  6. Step 6: Final answer
    x = 89,737.73

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.