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Finding the Fourth Proportional to 99,347.80, 149,021.70 and 82,726.60

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Solution

The fourth proportional to 99,347.80, 149,021.70 and 82,726.60 is: 124,089.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,347.80 : 149,021.70 = 82,726.60 : x
  2. Step 2: Convert to fraction form
    99,347.80/149,021.70 = 82,726.60/x
  3. Step 3: Cross multiply
    99,347.80x = 149,021.70 × 82,726.60
  4. Step 4: Simplify right side
    99,347.80x = 12,328,058,567.22
  5. Step 5: Solve for x
    x = 12,328,058,567.22/99,347.80
  6. Step 6: Final answer
    x = 124,089.90

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1.5x scale

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.