Home / 133,145.86-183,740.35-72,716.52

Finding the Fourth Proportional to 133,145.86, 183,740.35 and 72,716.52

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Solution

The fourth proportional to 133,145.86, 183,740.35 and 72,716.52 is: 100,348.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,145.86 : 183,740.35 = 72,716.52 : x
  2. Step 2: Convert to fraction form
    133,145.86/183,740.35 = 72,716.52/x
  3. Step 3: Cross multiply
    133,145.86x = 183,740.35 × 72,716.52
  4. Step 4: Simplify right side
    133,145.86x = 13,360,958,835.58
  5. Step 5: Solve for x
    x = 13,360,958,835.58/133,145.86
  6. Step 6: Final answer
    x = 100,348.29

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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.