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Finding the Fourth Proportional to 169,809.40, 254,563.44 and 85,459.24

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Solution

The fourth proportional to 169,809.40, 254,563.44 and 85,459.24 is: 128,113.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,809.40 : 254,563.44 = 85,459.24 : x
  2. Step 2: Convert to fraction form
    169,809.40/254,563.44 = 85,459.24/x
  3. Step 3: Cross multiply
    169,809.40x = 254,563.44 × 85,459.24
  4. Step 4: Simplify right side
    169,809.40x = 21,754,798,114.19
  5. Step 5: Solve for x
    x = 21,754,798,114.19/169,809.40
  6. Step 6: Final answer
    x = 128,113.04

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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.