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Finding the Fourth Proportional to 103,255.83, 154,931.13 and 61,219.26

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Solution

The fourth proportional to 103,255.83, 154,931.13 and 61,219.26 is: 91,856.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,255.83 : 154,931.13 = 61,219.26 : x
  2. Step 2: Convert to fraction form
    103,255.83/154,931.13 = 61,219.26/x
  3. Step 3: Cross multiply
    103,255.83x = 154,931.13 × 61,219.26
  4. Step 4: Simplify right side
    103,255.83x = 9,484,769,129.56
  5. Step 5: Solve for x
    x = 9,484,769,129.56/103,255.83
  6. Step 6: Final answer
    x = 91,856.98

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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.