Home / 133,243.07-183,869.98-72,815.76

Finding the Fourth Proportional to 133,243.07, 183,869.98 and 72,815.76

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Solution

The fourth proportional to 133,243.07, 183,869.98 and 72,815.76 is: 100,482.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,243.07 : 183,869.98 = 72,815.76 : x
  2. Step 2: Convert to fraction form
    133,243.07/183,869.98 = 72,815.76/x
  3. Step 3: Cross multiply
    133,243.07x = 183,869.98 × 72,815.76
  4. Step 4: Simplify right side
    133,243.07x = 13,388,631,415.53
  5. Step 5: Solve for x
    x = 13,388,631,415.53/133,243.07
  6. Step 6: Final answer
    x = 100,482.76

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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.