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Finding the Fourth Proportional to 187,019.81, 280,566.30 and 68,692.04

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Solution

The fourth proportional to 187,019.81, 280,566.30 and 68,692.04 is: 103,051.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,019.81 : 280,566.30 = 68,692.04 : x
  2. Step 2: Convert to fraction form
    187,019.81/280,566.30 = 68,692.04/x
  3. Step 3: Cross multiply
    187,019.81x = 280,566.30 × 68,692.04
  4. Step 4: Simplify right side
    187,019.81x = 19,272,671,502.25
  5. Step 5: Solve for x
    x = 19,272,671,502.25/187,019.81
  6. Step 6: Final answer
    x = 103,051.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.