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Finding the Fourth Proportional to 100,860.30, 151,290.45 and 45,564.30

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Solution

The fourth proportional to 100,860.30, 151,290.45 and 45,564.30 is: 68,346.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,860.30 : 151,290.45 = 45,564.30 : x
  2. Step 2: Convert to fraction form
    100,860.30/151,290.45 = 45,564.30/x
  3. Step 3: Cross multiply
    100,860.30x = 151,290.45 × 45,564.30
  4. Step 4: Simplify right side
    100,860.30x = 6,893,443,450.94
  5. Step 5: Solve for x
    x = 6,893,443,450.94/100,860.30
  6. Step 6: Final answer
    x = 68,346.45

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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.