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Finding the Fourth Proportional to 245,889.90, 368,890.47 and 75,127.05

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Solution

The fourth proportional to 245,889.90, 368,890.47 and 75,127.05 is: 112,707.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,889.90 : 368,890.47 = 75,127.05 : x
  2. Step 2: Convert to fraction form
    245,889.90/368,890.47 = 75,127.05/x
  3. Step 3: Cross multiply
    245,889.90x = 368,890.47 × 75,127.05
  4. Step 4: Simplify right side
    245,889.90x = 27,713,652,784.21
  5. Step 5: Solve for x
    x = 27,713,652,784.21/245,889.90
  6. Step 6: Final answer
    x = 112,707.57

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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.