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Finding the Fourth Proportional to 103,726.86, 143,143.65 and 59,014.86

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Solution

The fourth proportional to 103,726.86, 143,143.65 and 59,014.86 is: 81,440.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,726.86 : 143,143.65 = 59,014.86 : x
  2. Step 2: Convert to fraction form
    103,726.86/143,143.65 = 59,014.86/x
  3. Step 3: Cross multiply
    103,726.86x = 143,143.65 × 59,014.86
  4. Step 4: Simplify right side
    103,726.86x = 8,447,602,464.64
  5. Step 5: Solve for x
    x = 8,447,602,464.64/103,726.86
  6. Step 6: Final answer
    x = 81,440.84

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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.