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Finding the Fourth Proportional to 164,026.80, 245,845.80 and 85,100.40

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Solution

The fourth proportional to 164,026.80, 245,845.80 and 85,100.40 is: 127,549.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,026.80 : 245,845.80 = 85,100.40 : x
  2. Step 2: Convert to fraction form
    164,026.80/245,845.80 = 85,100.40/x
  3. Step 3: Cross multiply
    164,026.80x = 245,845.80 × 85,100.40
  4. Step 4: Simplify right side
    164,026.80x = 20,921,575,918.32
  5. Step 5: Solve for x
    x = 20,921,575,918.32/164,026.80
  6. Step 6: Final answer
    x = 127,549.74

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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.