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Finding the Fourth Proportional to 160,065.79, 220,891.37 and 87,468.68

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Solution

The fourth proportional to 160,065.79, 220,891.37 and 87,468.68 is: 120,707.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,065.79 : 220,891.37 = 87,468.68 : x
  2. Step 2: Convert to fraction form
    160,065.79/220,891.37 = 87,468.68/x
  3. Step 3: Cross multiply
    160,065.79x = 220,891.37 × 87,468.68
  4. Step 4: Simplify right side
    160,065.79x = 19,321,076,557.29
  5. Step 5: Solve for x
    x = 19,321,076,557.29/160,065.79
  6. Step 6: Final answer
    x = 120,707.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.