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Finding the Fourth Proportional to 169,858.40, 254,722.80 and 51,490.40

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Solution

The fourth proportional to 169,858.40, 254,722.80 and 51,490.40 is: 77,215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,858.40 : 254,722.80 = 51,490.40 : x
  2. Step 2: Convert to fraction form
    169,858.40/254,722.80 = 51,490.40/x
  3. Step 3: Cross multiply
    169,858.40x = 254,722.80 × 51,490.40
  4. Step 4: Simplify right side
    169,858.40x = 13,115,778,861.12
  5. Step 5: Solve for x
    x = 13,115,778,861.12/169,858.40
  6. Step 6: Final answer
    x = 77,215.96

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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.