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Finding the Fourth Proportional to 133,108.77, 183,690.48 and 72,679.93

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Solution

The fourth proportional to 133,108.77, 183,690.48 and 72,679.93 is: 100,298.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,108.77 : 183,690.48 = 72,679.93 : x
  2. Step 2: Convert to fraction form
    133,108.77/183,690.48 = 72,679.93/x
  3. Step 3: Cross multiply
    133,108.77x = 183,690.48 × 72,679.93
  4. Step 4: Simplify right side
    133,108.77x = 13,350,611,228.07
  5. Step 5: Solve for x
    x = 13,350,611,228.07/133,108.77
  6. Step 6: Final answer
    x = 100,298.51

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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.