Home / 133,111.31-183,692.68-72,681.92

Finding the Fourth Proportional to 133,111.31, 183,692.68 and 72,681.92

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Solution

The fourth proportional to 133,111.31, 183,692.68 and 72,681.92 is: 100,300.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,111.31 : 183,692.68 = 72,681.92 : x
  2. Step 2: Convert to fraction form
    133,111.31/183,692.68 = 72,681.92/x
  3. Step 3: Cross multiply
    133,111.31x = 183,692.68 × 72,681.92
  4. Step 4: Simplify right side
    133,111.31x = 13,351,135,572.18
  5. Step 5: Solve for x
    x = 13,351,135,572.18/133,111.31
  6. Step 6: Final answer
    x = 100,300.53

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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.