Home / 169,680.40-254,520.60-99,638.80

Finding the Fourth Proportional to 169,680.40, 254,520.60 and 99,638.80

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Solution

The fourth proportional to 169,680.40, 254,520.60 and 99,638.80 is: 149,458.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,680.40 : 254,520.60 = 99,638.80 : x
  2. Step 2: Convert to fraction form
    169,680.40/254,520.60 = 99,638.80/x
  3. Step 3: Cross multiply
    169,680.40x = 254,520.60 × 99,638.80
  4. Step 4: Simplify right side
    169,680.40x = 25,360,127,159.28
  5. Step 5: Solve for x
    x = 25,360,127,159.28/169,680.40
  6. Step 6: Final answer
    x = 149,458.20

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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.