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Finding the Fourth Proportional to 103,361.60, 142,373.28 and 73,094.72

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Solution

The fourth proportional to 103,361.60, 142,373.28 and 73,094.72 is: 100,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,361.60 : 142,373.28 = 73,094.72 : x
  2. Step 2: Convert to fraction form
    103,361.60/142,373.28 = 73,094.72/x
  3. Step 3: Cross multiply
    103,361.60x = 142,373.28 × 73,094.72
  4. Step 4: Simplify right side
    103,361.60x = 10,406,735,037.08
  5. Step 5: Solve for x
    x = 10,406,735,037.08/103,361.60
  6. Step 6: Final answer
    x = 100,682.80

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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.