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Finding the Fourth Proportional to 138,035.61, 207,047.48 and 43,263.86

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Solution

The fourth proportional to 138,035.61, 207,047.48 and 43,263.86 is: 64,893.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,035.61 : 207,047.48 = 43,263.86 : x
  2. Step 2: Convert to fraction form
    138,035.61/207,047.48 = 43,263.86/x
  3. Step 3: Cross multiply
    138,035.61x = 207,047.48 × 43,263.86
  4. Step 4: Simplify right side
    138,035.61x = 8,957,671,936.52
  5. Step 5: Solve for x
    x = 8,957,671,936.52/138,035.61
  6. Step 6: Final answer
    x = 64,893.92

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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.