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Finding the Fourth Proportional to 103,572.18, 155,259.84 and 66,026.88

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Solution

The fourth proportional to 103,572.18, 155,259.84 and 66,026.88 is: 98,977.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,572.18 : 155,259.84 = 66,026.88 : x
  2. Step 2: Convert to fraction form
    103,572.18/155,259.84 = 66,026.88/x
  3. Step 3: Cross multiply
    103,572.18x = 155,259.84 × 66,026.88
  4. Step 4: Simplify right side
    103,572.18x = 10,251,322,824.50
  5. Step 5: Solve for x
    x = 10,251,322,824.50/103,572.18
  6. Step 6: Final answer
    x = 98,977.57

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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.