Home / 99,774.79-137,692.41-56,753.17

Finding the Fourth Proportional to 99,774.79, 137,692.41 and 56,753.17

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Solution

The fourth proportional to 99,774.79, 137,692.41 and 56,753.17 is: 78,321.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,774.79 : 137,692.41 = 56,753.17 : x
  2. Step 2: Convert to fraction form
    99,774.79/137,692.41 = 56,753.17/x
  3. Step 3: Cross multiply
    99,774.79x = 137,692.41 × 56,753.17
  4. Step 4: Simplify right side
    99,774.79x = 7,814,479,780.21
  5. Step 5: Solve for x
    x = 7,814,479,780.21/99,774.79
  6. Step 6: Final answer
    x = 78,321.19

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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.