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Finding the Fourth Proportional to 103,245.17, 154,617.66 and 52,510.71

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Solution

The fourth proportional to 103,245.17, 154,617.66 and 52,510.71 is: 78,638.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,245.17 : 154,617.66 = 52,510.71 : x
  2. Step 2: Convert to fraction form
    103,245.17/154,617.66 = 52,510.71/x
  3. Step 3: Cross multiply
    103,245.17x = 154,617.66 × 52,510.71
  4. Step 4: Simplify right side
    103,245.17x = 8,119,083,684.95
  5. Step 5: Solve for x
    x = 8,119,083,684.95/103,245.17
  6. Step 6: Final answer
    x = 78,638.88

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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.