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Finding the Fourth Proportional to 124,813.80, 187,220.70 and 112,372.20

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Solution

The fourth proportional to 124,813.80, 187,220.70 and 112,372.20 is: 168,558.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,813.80 : 187,220.70 = 112,372.20 : x
  2. Step 2: Convert to fraction form
    124,813.80/187,220.70 = 112,372.20/x
  3. Step 3: Cross multiply
    124,813.80x = 187,220.70 × 112,372.20
  4. Step 4: Simplify right side
    124,813.80x = 21,038,401,944.54
  5. Step 5: Solve for x
    x = 21,038,401,944.54/124,813.80
  6. Step 6: Final answer
    x = 168,558.30

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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.