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Finding the Fourth Proportional to 169,840.20, 254,752.20 and 57,509.40

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Solution

The fourth proportional to 169,840.20, 254,752.20 and 57,509.40 is: 86,261.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,840.20 : 254,752.20 = 57,509.40 : x
  2. Step 2: Convert to fraction form
    169,840.20/254,752.20 = 57,509.40/x
  3. Step 3: Cross multiply
    169,840.20x = 254,752.20 × 57,509.40
  4. Step 4: Simplify right side
    169,840.20x = 14,650,646,170.68
  5. Step 5: Solve for x
    x = 14,650,646,170.68/169,840.20
  6. Step 6: Final answer
    x = 86,261.36

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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.