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Finding the Fourth Proportional to 163,385.56, 245,111.12 and 74,615.20

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Solution

The fourth proportional to 163,385.56, 245,111.12 and 74,615.20 is: 111,937.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,385.56 : 245,111.12 = 74,615.20 : x
  2. Step 2: Convert to fraction form
    163,385.56/245,111.12 = 74,615.20/x
  3. Step 3: Cross multiply
    163,385.56x = 245,111.12 × 74,615.20
  4. Step 4: Simplify right side
    163,385.56x = 18,289,015,241.02
  5. Step 5: Solve for x
    x = 18,289,015,241.02/163,385.56
  6. Step 6: Final answer
    x = 111,937.77

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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.