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Finding the Fourth Proportional to 169,638.10, 254,457.15 and 155,122.90

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Solution

The fourth proportional to 169,638.10, 254,457.15 and 155,122.90 is: 232,684.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,638.10 : 254,457.15 = 155,122.90 : x
  2. Step 2: Convert to fraction form
    169,638.10/254,457.15 = 155,122.90/x
  3. Step 3: Cross multiply
    169,638.10x = 254,457.15 × 155,122.90
  4. Step 4: Simplify right side
    169,638.10x = 39,472,131,033.74
  5. Step 5: Solve for x
    x = 39,472,131,033.74/169,638.10
  6. Step 6: Final answer
    x = 232,684.35

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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.