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Finding the Fourth Proportional to 102,028.40, 153,042.60 and 42,930.80

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Solution

The fourth proportional to 102,028.40, 153,042.60 and 42,930.80 is: 64,396.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,028.40 : 153,042.60 = 42,930.80 : x
  2. Step 2: Convert to fraction form
    102,028.40/153,042.60 = 42,930.80/x
  3. Step 3: Cross multiply
    102,028.40x = 153,042.60 × 42,930.80
  4. Step 4: Simplify right side
    102,028.40x = 6,570,241,252.08
  5. Step 5: Solve for x
    x = 6,570,241,252.08/102,028.40
  6. Step 6: Final answer
    x = 64,396.20

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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.