Home / 133,111.18-183,692.52-72,681.79

Finding the Fourth Proportional to 133,111.18, 183,692.52 and 72,681.79

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Solution

The fourth proportional to 133,111.18, 183,692.52 and 72,681.79 is: 100,300.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,111.18 : 183,692.52 = 72,681.79 : x
  2. Step 2: Convert to fraction form
    133,111.18/183,692.52 = 72,681.79/x
  3. Step 3: Cross multiply
    133,111.18x = 183,692.52 × 72,681.79
  4. Step 4: Simplify right side
    133,111.18x = 13,351,101,163.21
  5. Step 5: Solve for x
    x = 13,351,101,163.21/133,111.18
  6. Step 6: Final answer
    x = 100,300.37

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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.