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Finding the Fourth Proportional to 123,903.40, 185,855.10 and 45,007.52

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Solution

The fourth proportional to 123,903.40, 185,855.10 and 45,007.52 is: 67,511.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,903.40 : 185,855.10 = 45,007.52 : x
  2. Step 2: Convert to fraction form
    123,903.40/185,855.10 = 45,007.52/x
  3. Step 3: Cross multiply
    123,903.40x = 185,855.10 × 45,007.52
  4. Step 4: Simplify right side
    123,903.40x = 8,364,877,130.35
  5. Step 5: Solve for x
    x = 8,364,877,130.35/123,903.40
  6. Step 6: Final answer
    x = 67,511.28

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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.