Home / 133,212.36-183,827.28-72,780.15

Finding the Fourth Proportional to 133,212.36, 183,827.28 and 72,780.15

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Solution

The fourth proportional to 133,212.36, 183,827.28 and 72,780.15 is: 100,433.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,212.36 : 183,827.28 = 72,780.15 : x
  2. Step 2: Convert to fraction form
    133,212.36/183,827.28 = 72,780.15/x
  3. Step 3: Cross multiply
    133,212.36x = 183,827.28 × 72,780.15
  4. Step 4: Simplify right side
    133,212.36x = 13,378,977,012.49
  5. Step 5: Solve for x
    x = 13,378,977,012.49/133,212.36
  6. Step 6: Final answer
    x = 100,433.45

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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.