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Finding the Fourth Proportional to 100,037.76, 149,890.50 and 70,393.38

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Solution

The fourth proportional to 100,037.76, 149,890.50 and 70,393.38 is: 105,473.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,037.76 : 149,890.50 = 70,393.38 : x
  2. Step 2: Convert to fraction form
    100,037.76/149,890.50 = 70,393.38/x
  3. Step 3: Cross multiply
    100,037.76x = 149,890.50 × 70,393.38
  4. Step 4: Simplify right side
    100,037.76x = 10,551,298,924.89
  5. Step 5: Solve for x
    x = 10,551,298,924.89/100,037.76
  6. Step 6: Final answer
    x = 105,473.16

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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.