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Finding the Fourth Proportional to 159,203.89, 220,016.59 and 130,478.25

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Solution

The fourth proportional to 159,203.89, 220,016.59 and 130,478.25 is: 180,318.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,203.89 : 220,016.59 = 130,478.25 : x
  2. Step 2: Convert to fraction form
    159,203.89/220,016.59 = 130,478.25/x
  3. Step 3: Cross multiply
    159,203.89x = 220,016.59 × 130,478.25
  4. Step 4: Simplify right side
    159,203.89x = 28,707,378,482.91
  5. Step 5: Solve for x
    x = 28,707,378,482.91/159,203.89
  6. Step 6: Final answer
    x = 180,318.32

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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.