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Finding the Fourth Proportional to 103,806.10, 155,709.15 and 101,837.80

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Solution

The fourth proportional to 103,806.10, 155,709.15 and 101,837.80 is: 152,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,806.10 : 155,709.15 = 101,837.80 : x
  2. Step 2: Convert to fraction form
    103,806.10/155,709.15 = 101,837.80/x
  3. Step 3: Cross multiply
    103,806.10x = 155,709.15 × 101,837.80
  4. Step 4: Simplify right side
    103,806.10x = 15,857,077,275.87
  5. Step 5: Solve for x
    x = 15,857,077,275.87/103,806.10
  6. Step 6: Final answer
    x = 152,756.70

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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.