Home / 135,681.84-187,200.72-79,083.36

Finding the Fourth Proportional to 135,681.84, 187,200.72 and 79,083.36

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Solution

The fourth proportional to 135,681.84, 187,200.72 and 79,083.36 is: 109,111.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,681.84 : 187,200.72 = 79,083.36 : x
  2. Step 2: Convert to fraction form
    135,681.84/187,200.72 = 79,083.36/x
  3. Step 3: Cross multiply
    135,681.84x = 187,200.72 × 79,083.36
  4. Step 4: Simplify right side
    135,681.84x = 14,804,461,932.02
  5. Step 5: Solve for x
    x = 14,804,461,932.02/135,681.84
  6. Step 6: Final answer
    x = 109,111.59

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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.