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Finding the Fourth Proportional to 109,607.76, 151,165.08 and 75,670.56

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Solution

The fourth proportional to 109,607.76, 151,165.08 and 75,670.56 is: 104,360.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,607.76 : 151,165.08 = 75,670.56 : x
  2. Step 2: Convert to fraction form
    109,607.76/151,165.08 = 75,670.56/x
  3. Step 3: Cross multiply
    109,607.76x = 151,165.08 × 75,670.56
  4. Step 4: Simplify right side
    109,607.76x = 11,438,746,256.04
  5. Step 5: Solve for x
    x = 11,438,746,256.04/109,607.76
  6. Step 6: Final answer
    x = 104,360.73

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Why These Related Problems?

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