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Finding the Fourth Proportional to 169,315.60, 253,973.40 and 85,334.80

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Solution

The fourth proportional to 169,315.60, 253,973.40 and 85,334.80 is: 128,002.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,315.60 : 253,973.40 = 85,334.80 : x
  2. Step 2: Convert to fraction form
    169,315.60/253,973.40 = 85,334.80/x
  3. Step 3: Cross multiply
    169,315.60x = 253,973.40 × 85,334.80
  4. Step 4: Simplify right side
    169,315.60x = 21,672,769,294.32
  5. Step 5: Solve for x
    x = 21,672,769,294.32/169,315.60
  6. Step 6: Final answer
    x = 128,002.20

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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.