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Finding the Fourth Proportional to 163,646.88, 245,470.28 and 45,318.20

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Solution

The fourth proportional to 163,646.88, 245,470.28 and 45,318.20 is: 67,977.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,646.88 : 245,470.28 = 45,318.20 : x
  2. Step 2: Convert to fraction form
    163,646.88/245,470.28 = 45,318.20/x
  3. Step 3: Cross multiply
    163,646.88x = 245,470.28 × 45,318.20
  4. Step 4: Simplify right side
    163,646.88x = 11,124,271,243.10
  5. Step 5: Solve for x
    x = 11,124,271,243.10/163,646.88
  6. Step 6: Final answer
    x = 67,977.29

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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.