Home / 159,644.16-220,328.88-91,682.40

Finding the Fourth Proportional to 159,644.16, 220,328.88 and 91,682.40

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Solution

The fourth proportional to 159,644.16, 220,328.88 and 91,682.40 is: 126,533.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,644.16 : 220,328.88 = 91,682.40 : x
  2. Step 2: Convert to fraction form
    159,644.16/220,328.88 = 91,682.40/x
  3. Step 3: Cross multiply
    159,644.16x = 220,328.88 × 91,682.40
  4. Step 4: Simplify right side
    159,644.16x = 20,200,280,507.71
  5. Step 5: Solve for x
    x = 20,200,280,507.71/159,644.16
  6. Step 6: Final answer
    x = 126,533.16

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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.