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Finding the Fourth Proportional to 124,860.70, 187,291.05 and 82,870.30

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Solution

The fourth proportional to 124,860.70, 187,291.05 and 82,870.30 is: 124,305.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,860.70 : 187,291.05 = 82,870.30 : x
  2. Step 2: Convert to fraction form
    124,860.70/187,291.05 = 82,870.30/x
  3. Step 3: Cross multiply
    124,860.70x = 187,291.05 × 82,870.30
  4. Step 4: Simplify right side
    124,860.70x = 15,520,865,500.82
  5. Step 5: Solve for x
    x = 15,520,865,500.82/124,860.70
  6. Step 6: Final answer
    x = 124,305.45

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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.